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Optical Glass Filters

Al Luebbers, our founder, collected glass. Not glass like you'd find on a knick-knack shelf, but optical glass. Lenses, prisms, reticles and filters, for example. Focus on the filters. Many of his filters came out of military surplus, and this is for-real stuff. We mean many are solid dyed optical glass, ground and polished to flatness standards that were probably excessive. Others are from the old days in photographic optics, and their standards were even tighter than your militaristic Uncle's. We've found that photographers, artists, and optical designers still have an occasional need for good glass filters, so we're making a list of some goodies. As always, don't be timid about calling for quotes on quantities. If we have 'em, we'll sell 'em. Just don't sell them back. Please! If you're just playing, the assortment set may be a better way to go. Can't decide?? New to filters?? Doing a science project on light?? Let us assort (6) different filters of at least 20mm. dia for you.

    DIAM.or SIZE (mm) CENTER THICK (mm)  
3477 FILTER, AMBER 26 1.5
$1.80 PKG(3)
3492 FILTER, AMBER 30 2.3
$1.50 PKG(2)
3480 FILTER, NEUTRAL 26 1.5
$1.80 PKG(3)
3490 FILTER, NEUTRAL 30 2.3
$2.00 PKG(2)
3510 FILTER, NEUTRAL 50x54 3.1
$1.25 EACH
3512 FILTER, NEUTRAL 67x70 4.1
$1.75 EACH
3458 FILTER, RED 6 1.4
$2.00 PKG(4)
3464 FILTER, TYPE A 9 1.8
$2.25 PKG(3)
3470 FILTER, YELLOW 18x18 1.6
$2.00 PKG(4)
3504 FILTER, YELLOW 37 5.5
$1.50 PKG(2)

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Closeup

Designed for watchmakers, this aluminum loupe with a 1" dia, 10x glass lens snugs to your eye, but leaves your hands free, thanks to the flexible 15" headband that encircles your head. It has a 1-1/2" working distance, and would come in handy, too, if you poke around in needlepoint or manipulate anything miniature.

91792 HEAD BAND LOUPE
$4.25 EACH
 

Magnif Lamp

Magnificent magnifier lamp! Great for hobby work, stamp or coin collecting, needlepoint, sewing and crafts, even reading if your eyes are "mature". The plastic "head" assembly has a 3.5" dia, 3 diopter magnifying lens and a socket with switch for an incandescent lamp (60 Watt max.) This is mounted on the end of an arm the other end of which clamps to the table top. The arm has (2) roughly 15" long sections and swivels at the clamp to allow precise positioning over your work. Plugs into any wall socket. Basic black or white, it is a brand new good quality item that you will find so useful you will wonder how you got along without it!

89418 DESK MAGNIFYING LAMP
$19.95 EACH

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Digital Light Meter

This Velleman DVM 1300 Light Meter displays measurements between 0.1 and 50K lux in (5) different ranges on a liquid crystal display with (4) 1/2" high digits. Filtered 1-1/2" dia sensor on a 13" coiled cord. The 4-5/8" x 2-3/8" x 7/8" case has reflective tape on the back for dealing with a shadow. Comes in a vinyl case with a recommended-illumination chart and a 12-volt battery.

92715 LIGHT METER
$59.95 EACH

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Monitor Mirror

It doesn't say that on the box, but that's what we're using it for around here because we're tired of surprises. It's a slightly convex 2-3/8" x 2" plastic mirror with a ball-and-socket joint (4-1/8" tall OA) with a self-adhesive strip to mount it where you can see people who have no business sneaking up on you in the first place, OK? Includes a little clip on the back to hold notes.

37074 MOUNTED MIRROR
$1.25 EACH

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Lighted Loupe

For when you need things big and bright. The acrylic-lensed eye loupe has an adjustable white LED attached to the side, powered by a button cell battery that's included and replaceable. The lens is just under 7/8" dia on a 1" long loupe with a 1-1/4" eye port. The package says 10X, but it looks more like 5X to us, which is still good for a loupe. The battery life for the light is approx 22 hours.

92982 LED EYE LOUPE
$3.95 EACH

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