Perfect for hands-on hobbyists. Foot-pedal speed controls free up your paws to do the real work. This one's for 120VAC devices, and ideal for machines using approx 200W or 1.6A or less. Measures 5" x 3" x 2-1/4" tall, with a 6-foot cord that plugs into the wall and a 2-foot grounded female plug for your sewing machine, rotary tool, scroll saw, or, if you really make a lot of banana Daiquiris, blender.

The USB is here to stay. Admit it and lose the adapters. Take out one of your standard wall plugs and wire in this double USB outlet with a regular, 3-prong grounded outlet below. The USBs are 2.1 amp chargers. Measures 2-1/2” tall x 1-3/8” and fits standard single-socket wall outlets. This is the future. From GE.

Our inline filter helps rid your AC line of EMI and spikes. Rated for up to 16A at 250VAC. Has quick-disconnect terminals for the line and lead sides. Schematic is on the 1-1/2" x 1-3/8" x 1-5/8" housing.

If so, you might understand this circuit board originally from an HVAC controller. Maybe better to have an artistic brainstorm and repurpose this pretty little thing. Might be fun to use as a part on a faux robot. (Fauxbot!) Measures 2" x 5-3/4" with a 2-digit alphanumeric display, (14) green LEDs, (9) push-button switches, a 12-pin connector with multicolor leads, and, because it is true surplus, no wiring diagram.

Okay, they’re just strips of metal, but CJ says one of each and a grapefruit will get you at least a “C” at the science fair. The copper electrode is 100mm long x 18mm wide  x .8mm thick (3.94" x .7" x .041”). The zinc electrode is 4” long x 3/4” wide x .027” thick and stamped “ZN”. And both of them are awfully useful for crafters and jewelry makers, too.

Here are some options to pick from. The Bimba stainless steel air cylinder measures 5” long x 3/4” dia with 5” stroke. Has a 1/4”-28 x 1/2” long threaded rod with a 3/4” stroke, and a nose mount that's 5/8”-18. Double-acting so it will push/pull. They're used take-outs, Bimba part #53E743. The Festo stainless steel air cylinder is double-acting—push/pull. New, Festo model DO-12-74-PP-SA, with 10-32 ports with adapters to 1/16" hosebarbs. Bore: 12 mm (0.472"). Stroke is 2-3/4". Retracted length is 6-3/4" end-to-end. Max 116 PSI.

With this 1.2K OHM 10% tolerance power resistor. Rated 3 to 5 watts, it has a ceramic block body 3/8" sq x 1-1/2" long with wire leads on ends, one of which is 1/2" long and the other 1-1/2". Any questions?

Rated for 10A at 250VAC, these normally closed thermal fuses will pop at 128ºC or 262ºF. The fuses themselves are 1/2" long but yours will be wired into leads of assorted lengths, because they were betooken out of coffeemakers of some sort. Never been popped, though, because then they would be useless and who'd buy 'em?

This remote VGA receiver measures 3-1/4" x 3-1/2" x 1-3/16" and is made to use with the NTI CAT5 VGA remote system which allows VGA and sound info to be transferred up to 600 feet on a CAT5 cable. Don't have the system? Pop the rivets on the bottom and you've got a dandy project case, a PCB-mount 5.5mm barrel plug and 1/8" audio jack plus whatever you can strip from the PCB board.

Our VP for Sensing Fluid Pressure called this sensor from Kavlico “sweet.” Needs a 5VDC 20mW power source, and will likely put out 0-4VDC, contingent on pressure, from 0-5"/H2O max, we’d say. Measures 1-5/16" x 17/32" on a pair of 7/8" long 5/32" slotted mounting wings. The upper 3/16" OD barb is the low side, and the lower is (ironically) high. Has a 3-pin connector with legend on the back for power and output. Call for a data sheet.