BEST SELLERS

Placebo Lens

Great little glass DCX lenses for all of your project needs.  Utilize their 48.3mm focal lengths for all classroom projects, or combine these with other lenses to build binoculars, magnifiers, microscopes and telescopes. These are seconds so may have small chips.

 

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DCX LENS, 14MM

Placebo Lens

Great little glass DCX lenses for all of your project needs.  Utilize their 48.3mm focal lengths for all classroom projects, or combine these with other lenses to build binoculars, magnifiers, microscopes and telescopes. These are seconds so may have small chips.

 

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$3.25 PKG (12)

Make Mini Mayhem

A must-have for micro-warriors; Mini Weapons of Mass Destruction by John Austin (author of the best-selling Cubicle Warfare) is 241 pages of detailed instructions for building (42) implements of spitball warfare from ordinary household objects and office supplies. With the caveat that this is written for responsible individuals who take reasonable safety precautions (don't do anything your mother would scream at) we have to say that we love the binder-clip crossbow and the tongue-depressor catapult. Volume 2, which is 251 pages, has a secret-agent flair with new gadgets like the push-pin dart, toothpaste periscope and cereal briefcase. Volume 3, 267 pages, continues with a Medieval flavor and over a dozen catapults and ballistae, plus a buncha bows and crossbows. Oh, just buy the whole 3-volume Library of Destruction and get it over with.

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MINI-WEAPONS BOOK

Make Mini Mayhem

A must-have for micro-warriors; Mini Weapons of Mass Destruction by John Austin (author of the best-selling Cubicle Warfare) is 241 pages of detailed instructions for building (42) implements of spitball warfare from ordinary household objects and office supplies. With the caveat that this is written for responsible individuals who take reasonable safety precautions (don't do anything your mother would scream at) we have to say that we love the binder-clip crossbow and the tongue-depressor catapult. Volume 2, which is 251 pages, has a secret-agent flair with new gadgets like the push-pin dart, toothpaste periscope and cereal briefcase. Volume 3, 267 pages, continues with a Medieval flavor and over a dozen catapults and ballistae, plus a buncha bows and crossbows. Oh, just buy the whole 3-volume Library of Destruction and get it over with.

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Ten Roentgens & Counting…

If Madame Curie had owned this, she'd be alive today. (She'd be more than 140 years old, of course, but still….) Our Radex RD1503 digital radiation meter evaluates the ambient level of gamma radiation, and can detect objects polluted by beta active radioactive nuclides. It uses a Geiger counter to detect the amount of gamma radiation within 40 seconds. It indicates the ambient dose equivalent in µSv/hr (0.05 to 9.99) and the µRem/hr exposure dose rate on a scale of 0.1 to1.25. The values are displayed on a 1-3/4" x 1-1/8" LCD screen. The presence of each particle is indicated by a clicking sound, for quick identification of affected areas, and it has an audio alarm with 3 adjustable ranges. The unit measures 4" x 2-1/4" x 1" and comes with a detailed manual and technical certificate. Requires (2) "AAA" batteries. Made in Russia. CE.

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RADIATION METER

Ten Roentgens & Counting…

If Madame Curie had owned this, she'd be alive today. (She'd be more than 140 years old, of course, but still….) Our Radex RD1503 digital radiation meter evaluates the ambient level of gamma radiation, and can detect objects polluted by beta active radioactive nuclides. It uses a Geiger counter to detect the amount of gamma radiation within 40 seconds. It indicates the ambient dose equivalent in µSv/hr (0.05 to 9.99) and the µRem/hr exposure dose rate on a scale of 0.1 to1.25. The values are displayed on a 1-3/4" x 1-1/8" LCD screen. The presence of each particle is indicated by a clicking sound, for quick identification of affected areas, and it has an audio alarm with 3 adjustable ranges. The unit measures 4" x 2-1/4" x 1" and comes with a detailed manual and technical certificate. Requires (2) "AAA" batteries. Made in Russia. CE.

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$199.95 EACH

50,000 Volts

That's what you get with this tesla coil!! Brand new, commercial item, great for classroom demonstrations and experiments. The 50,000 volt capacity generator radiates high frequency energy through space... enough to light fluorescent tubes two feet away. It uses 115 VAC (60 Hz) with an electro-magnetically operated interrupter buzzer, high voltage capacitors, inductive coil transformer, and a monopolar high frequency transformer generator to do the trick. 11" high, with a 6" sq. x 2" high protective housing for the generator. Includes accessories and instruction booklet with 19 experiments. Pretty amazing. But please, this is not a toy and should be used only under adult supervision.

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50,000 VOLT TESLA COIL

50,000 Volts

That's what you get with this tesla coil!! Brand new, commercial item, great for classroom demonstrations and experiments. The 50,000 volt capacity generator radiates high frequency energy through space... enough to light fluorescent tubes two feet away. It uses 115 VAC (60 Hz) with an electro-magnetically operated interrupter buzzer, high voltage capacitors, inductive coil transformer, and a monopolar high frequency transformer generator to do the trick. 11" high, with a 6" sq. x 2" high protective housing for the generator. Includes accessories and instruction booklet with 19 experiments. Pretty amazing. But please, this is not a toy and should be used only under adult supervision.

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$229.00 EACH

Light 'n' Laser Twofer

A bright little flashlight with (8) super-bright white LEDs in a circle and a less-than-5mW red laser right in the middle. One click and it's a flashlight, another click and it's a laser pointer. (Note: flashlight and pointer can't be on at the same time.) Measures 4-3/8" long x 1-1/8" dia in assorted colors dark silver, red or blue aluminum with knurled grips at both ends. Lasts 30 hours on a set of new alkaline batteries (3 "AAA" heavy duty batteries included).

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2-IN-1 FLASHLIGHT

Light 'n' Laser Twofer

A bright little flashlight with (8) super-bright white LEDs in a circle and a less-than-5mW red laser right in the middle. One click and it's a flashlight, another click and it's a laser pointer. (Note: flashlight and pointer can't be on at the same time.) Measures 4-3/8" long x 1-1/8" dia in assorted colors dark silver, red or blue aluminum with knurled grips at both ends. Lasts 30 hours on a set of new alkaline batteries (3 "AAA" heavy duty batteries included).

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$7.50 EACH

Scope It Out

See clearly with this 20X stereo microscope; coins, fossils, circuit boards, bugs and splinters have never been larger. Dual 10X eyepieces provide a stereoscopic view with a 2-1/2" to 3-7/8" working distance while an LED illuminator powered by (2) "AA" batteries (included) brightens and a black/white stage plate with aluminum clips improves your contrast. Eyepieces are also adjustable for those who like to play with interpupillary distance and it stands 10-1/2" tall. Great for students, hobbyists, crafters and more.

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20x STEREO INSPECTION MICROSCOPE

Scope It Out

See clearly with this 20X stereo microscope; coins, fossils, circuit boards, bugs and splinters have never been larger. Dual 10X eyepieces provide a stereoscopic view with a 2-1/2" to 3-7/8" working distance while an LED illuminator powered by (2) "AA" batteries (included) brightens and a black/white stage plate with aluminum clips improves your contrast. Eyepieces are also adjustable for those who like to play with interpupillary distance and it stands 10-1/2" tall. Great for students, hobbyists, crafters and more.

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$79.95 EACH

Reach For The Stars

The AstroMaster 76EQ Telescope by Celestron® is great for budding stargazers. 76mm dia with a 700mm focal length. Includes a (35X) eyepiece, starPointer, erect image optics, and a German Equitorial mount, which allows you to track a celestial body on its elliptical path across the sky with the turn of a simple knob; no more chasing the moon and stars through endless blackness. Also has a steel-tube tripod, coated glass optics for crisp images and the SkyX-First Light Edition astronomy software with a 10,000-object database, printable sky maps and 75 enhanced images. Quick and easy, no-tool setup. For versatility, pick an additional Plössl eyepiece: the 15mm eyepiece at 46X magnification; or the 6mm at 116X magnification.

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CELESTRON ASTROMASTER 76MM TELESCOPE

Reach For The Stars

The AstroMaster 76EQ Telescope by Celestron® is great for budding stargazers. 76mm dia with a 700mm focal length. Includes a (35X) eyepiece, starPointer, erect image optics, and a German Equitorial mount, which allows you to track a celestial body on its elliptical path across the sky with the turn of a simple knob; no more chasing the moon and stars through endless blackness. Also has a steel-tube tripod, coated glass optics for crisp images and the SkyX-First Light Edition astronomy software with a 10,000-object database, printable sky maps and 75 enhanced images. Quick and easy, no-tool setup. For versatility, pick an additional Plössl eyepiece: the 15mm eyepiece at 46X magnification; or the 6mm at 116X magnification.

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$169.95 EACH

Here's my Card

Clever little plastic boxes 4-1/2" x 2-1/4" x 1" hold note paper - and dispense one sheet at a time as you open and close the cover. The clear red box is labeled "Mom". They work even better with business cards, so they make great little gifts if Mom has her own cards. We'll send you a bag of (3) with each order. 

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MOM MEMO PAD BOXES

Here's my Card

Clever little plastic boxes 4-1/2" x 2-1/4" x 1" hold note paper - and dispense one sheet at a time as you open and close the cover. The clear red box is labeled "Mom". They work even better with business cards, so they make great little gifts if Mom has her own cards. We'll send you a bag of (3) with each order. 

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$1.95 PKG (3)

History Project

Unfortunately this grand assortment of flags from America's past came without explanatory text - or maybe that's fortunate. Might make a challenging research project for a young historian. Cloth flags, about 4" x 6" (sizes vary slightly), on 10-1/2" gold plastic staffs. They even come from a U.S. manufacturer! Not all are U.S. national flags, but as near as we can tell all are part of American history. You'll get a shipment of (5) different flags. Wave on!

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HISTORICAL FLAGS

History Project

Unfortunately this grand assortment of flags from America's past came without explanatory text - or maybe that's fortunate. Might make a challenging research project for a young historian. Cloth flags, about 4" x 6" (sizes vary slightly), on 10-1/2" gold plastic staffs. They even come from a U.S. manufacturer! Not all are U.S. national flags, but as near as we can tell all are part of American history. You'll get a shipment of (5) different flags. Wave on!

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$3.25 PKG (5)

ADVANCED STUDENT MICROSCOPE

Advanced Student Microscope With extra-sturdy construction, international-standard DIN, fully coated eyepiece and objectives, this is an excellent student microscope. It provides good resolution and centering, and maintains focus when objectives are changed. Stage clips, rack stops, smooth positive mechanical movements, built-in illuminator, coarse and fine focus.

• Magnification: 40X, 100X, 400X, 1000X (oil)

• Objectives: 4X, 10X, 40X, 100X (oil) spring-loaded, parfocal, centered achromatic.

• Eyepiece: 23mm 10X wide field with pointer.

• Illumination: Built-in 5 watt fluorescent, 110V with condensor.

• Stage Size: 120mm x 110mm with locked-in stage spring clips.

• Focusing: Rack and pinion, coarse & fine controls.

• Weight/Height: 8 lbs/14".

• Viewing Angle: 45°

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1000X ADVANCED STUDENT MICROSCOPE

ADVANCED STUDENT MICROSCOPE

Advanced Student Microscope With extra-sturdy construction, international-standard DIN, fully coated eyepiece and objectives, this is an excellent student microscope. It provides good resolution and centering, and maintains focus when objectives are changed. Stage clips, rack stops, smooth positive mechanical movements, built-in illuminator, coarse and fine focus.

• Magnification: 40X, 100X, 400X, 1000X (oil)

• Objectives: 4X, 10X, 40X, 100X (oil) spring-loaded, parfocal, centered achromatic.

• Eyepiece: 23mm 10X wide field with pointer.

• Illumination: Built-in 5 watt fluorescent, 110V with condensor.

• Stage Size: 120mm x 110mm with locked-in stage spring clips.

• Focusing: Rack and pinion, coarse & fine controls.

• Weight/Height: 8 lbs/14".

• Viewing Angle: 45°

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$234.95 EACH

Microscope To Go

Microscopy marches on. This 20-500X portable digital microscope with a video recording function has a 3” LCD, 5Mp sensor, resolution between 1.3-12Mp as well as VGA, 8-LED illumination and a rechargeable battery, which will power it for 4 hours. Includes a 5 volt adapter for charging, a ball and socket pedestal stand, A/V cable, carrying pouch and chamois. Does some nifty tricks, including extrapolated measurements from kilometers down to microns. Measures 5” x 4” x 1-1/4” overall and weighs just 4 oz. It’s from Levenhuk®, with a lifetime warranty.

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LEVENHUK® 20X-500X PORTABLE MICROSCOPE

Microscope To Go

Microscopy marches on. This 20-500X portable digital microscope with a video recording function has a 3” LCD, 5Mp sensor, resolution between 1.3-12Mp as well as VGA, 8-LED illumination and a rechargeable battery, which will power it for 4 hours. Includes a 5 volt adapter for charging, a ball and socket pedestal stand, A/V cable, carrying pouch and chamois. Does some nifty tricks, including extrapolated measurements from kilometers down to microns. Measures 5” x 4” x 1-1/4” overall and weighs just 4 oz. It’s from Levenhuk®, with a lifetime warranty.

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$134.95 EACH

AWARD WINNING SNAP CIRCUITS

Build yourself a kid with a career in electronics. Start with this Snap Circuits® Motion kit with over (50) parts and instructions for (165) projects, including a mini-car, crawler, motion detector, tilt sensor and others. You add (4) "AA" batteries, conveniently available right here at your favorite supplier. From Elenco®.

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SNAP MOTION MOTION KIT FROM ELENCO

AWARD WINNING SNAP CIRCUITS

Build yourself a kid with a career in electronics. Start with this Snap Circuits® Motion kit with over (50) parts and instructions for (165) projects, including a mini-car, crawler, motion detector, tilt sensor and others. You add (4) "AA" batteries, conveniently available right here at your favorite supplier. From Elenco®.

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$59.20 EACH
$64.95
-9%

Bridges To Burn

Or break, actually, as an heuristic exercise. Here's a classroom-full of bridge-building supplies based on the Illinois Institute of Technology's national bridge-building contest. Each kit contains enough balsa wood pieces and glue to supply (24) budding engineers or physics students with what it takes to test their skills at wooden bridge construction. Includes a 12pp teacher's guide with info about (6) bridge styles and (8) types of trusses, (24) rules/instruction sheets for students, (360) pieces of 1/8" square x 24" long wood, and (24) bottles of white glue. Among the most engaging and popular classroom projects in the country, it's designed for grades 7-12.

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CLASSROOM BRIDGE KIT

Bridges To Burn

Or break, actually, as an heuristic exercise. Here's a classroom-full of bridge-building supplies based on the Illinois Institute of Technology's national bridge-building contest. Each kit contains enough balsa wood pieces and glue to supply (24) budding engineers or physics students with what it takes to test their skills at wooden bridge construction. Includes a 12pp teacher's guide with info about (6) bridge styles and (8) types of trusses, (24) rules/instruction sheets for students, (360) pieces of 1/8" square x 24" long wood, and (24) bottles of white glue. Among the most engaging and popular classroom projects in the country, it's designed for grades 7-12.

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$89.95 EACH

PELTIER HEAT PUMP

High tech comes to Am Sci & Surp!! It is here in the form of a Peltier junction, a thermo-electric device that translates electric power into heat, and perversely, into cool. Apply current @ 3-12 VDC to the gizmo and it extracts thermal energy from one face, thereby cooling it. The heat is dumped onto the other face, thereby heating it. Please note: you must use a heat sink on the hot side or the junction will fry itself, since it can quickly create a 65° C temperature differential in a no load situation. Stack two, or build a cascade to increase the thermal differential created. Or run it backwards. Apply heat or cold to the relevant face and produce a current. Amazing for science projects and experiments. Practical for coffee warmers, beer coolers and mini-refrigerator or warming oven applications. Comes with instructions. Large is 1-9/16" sq. x 3/16" thick.

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PELTIER JUNCTION THERMO-ELECTRO DEVICE

PELTIER HEAT PUMP

High tech comes to Am Sci & Surp!! It is here in the form of a Peltier junction, a thermo-electric device that translates electric power into heat, and perversely, into cool. Apply current @ 3-12 VDC to the gizmo and it extracts thermal energy from one face, thereby cooling it. The heat is dumped onto the other face, thereby heating it. Please note: you must use a heat sink on the hot side or the junction will fry itself, since it can quickly create a 65° C temperature differential in a no load situation. Stack two, or build a cascade to increase the thermal differential created. Or run it backwards. Apply heat or cold to the relevant face and produce a current. Amazing for science projects and experiments. Practical for coffee warmers, beer coolers and mini-refrigerator or warming oven applications. Comes with instructions. Large is 1-9/16" sq. x 3/16" thick.

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$6.95 EACH
$11.95
-42%

GAGGLE OF GASKETS

Black neoprene gaskets in a variety of sizes and shapes: loops, hoops and flat. Stretchy, a little dusty, but in good condition. The small round assortment gets you (2) gaskets, approx. 1/2"  dia cross-section, in loops with overall diameters between 1 and 3 feet. The large round assortment gets you approx. 3/4" dia. The Flat assortment is pieces that make loops of 2 to 5 feet dia. The rubber is about 2" x 1-1/2", but the shape varies: could be square, grooved, V-shaped, or something else. Use as is for really big valves, or better yet, chop it down to size. A great way to get cheap rubber materials for your non-critical applications We'll pick the exact dimensions and, in the case of the Flat assortment, the shape you get.

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LARGE APPROX 3/4" ROUND RUBBER GASKETS

GAGGLE OF GASKETS

Black neoprene gaskets in a variety of sizes and shapes: loops, hoops and flat. Stretchy, a little dusty, but in good condition. The small round assortment gets you (2) gaskets, approx. 1/2"  dia cross-section, in loops with overall diameters between 1 and 3 feet. The large round assortment gets you approx. 3/4" dia. The Flat assortment is pieces that make loops of 2 to 5 feet dia. The rubber is about 2" x 1-1/2", but the shape varies: could be square, grooved, V-shaped, or something else. Use as is for really big valves, or better yet, chop it down to size. A great way to get cheap rubber materials for your non-critical applications We'll pick the exact dimensions and, in the case of the Flat assortment, the shape you get.

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RIDE OFF INTO THE SUNSET

It's hard to make a good exit if your feet keep slipping off the pedals. We have acquired (2) styles of replacement bike pedals, so you can depart in dignity. Cheap dignity. Flat-top pedals give each foot a 3-1/4" x 4-1/4" hard plastic platform on a shaft with 1/2" dia x 7/8" threaded end. Both pedals threaded counter-clockwise. These "excel" pedals may have been made for an exercise bike. Concave pedals are 1-3/16" thick and have slightly dished 2-5/16" x 4" faces. These come in lefts and rights (you'll get one of each) with 1/2" x 1/2" clockwise and counterclockwise threaded shafts.

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FLAT-TOP PEDALS

RIDE OFF INTO THE SUNSET

It's hard to make a good exit if your feet keep slipping off the pedals. We have acquired (2) styles of replacement bike pedals, so you can depart in dignity. Cheap dignity. Flat-top pedals give each foot a 3-1/4" x 4-1/4" hard plastic platform on a shaft with 1/2" dia x 7/8" threaded end. Both pedals threaded counter-clockwise. These "excel" pedals may have been made for an exercise bike. Concave pedals are 1-3/16" thick and have slightly dished 2-5/16" x 4" faces. These come in lefts and rights (you'll get one of each) with 1/2" x 1/2" clockwise and counterclockwise threaded shafts.

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$2.00 EACH

Flowery Lamps

Or lampy flowers, we're not sure. We do know these ceramic lamp finials (the thingees that hold the shade on) are sweetly colored bunches of flowers, about 1" dia x 3" tall. Our each is a box of (4) including (1) each with yellow chrysanthemums, yellow daffodils, rose, purple and yellow tulips, and rose and purple somethings which we think may sort of be pansies. All have green leaves around the flowers. Very pretty, but we suggest you do not use them with a hi-tech decor.

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FLOWER LAMP TOPS

Flowery Lamps

Or lampy flowers, we're not sure. We do know these ceramic lamp finials (the thingees that hold the shade on) are sweetly colored bunches of flowers, about 1" dia x 3" tall. Our each is a box of (4) including (1) each with yellow chrysanthemums, yellow daffodils, rose, purple and yellow tulips, and rose and purple somethings which we think may sort of be pansies. All have green leaves around the flowers. Very pretty, but we suggest you do not use them with a hi-tech decor.

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$1.25 EACH

A/V Ports

Standard-sized, white-plastic wall plates for permanent A/V wiring. The (3) color coded female RCA terminals will let you get rid of that unsightly tangled rat's nest of cables on the floor and cleanly and neatly run them through the walls. You deserve that video screen and stereo speakers in the bathroom after all.

 

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PLATE, 3 RCAS

A/V Ports

Standard-sized, white-plastic wall plates for permanent A/V wiring. The (3) color coded female RCA terminals will let you get rid of that unsightly tangled rat's nest of cables on the floor and cleanly and neatly run them through the walls. You deserve that video screen and stereo speakers in the bathroom after all.

 

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$0.50 EACH
$0.95
-47%

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