In this video, I discuss the challenges of locating a vacuum leak in a car and demonstrate how to create a smoke test machine ...

Marked: "Sterling R-401 / Vacuum Tube Tester / Serial No. 2563 / The Sterling Mfg. Co. Cleveland, Ohio, U.S.A." Unit is designed to test standard 201-A and 301-A triodes by measuring plate current on ...

Marked: "Sterling / R-402 / Vacuum Tube Tester / Serial No. 5764 / The Sterling Mfg. Co., Cleveland, Ohio, U.S.A." Instruction label pasted beneath unit. In original box with instruction sheet. Same ...

These Ugg slippers are the perfect last-minute gift for anyone on your list. They come in 13 colors and feature sheep fur on ...

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A blast from the Elektor archives: this clever 1998 battery tester uses a simple LED display to reveal a battery’s true condition under load — even below 1 V. Built from standard components and no ...

I'm a Fitness & Nutrition writer for CNET who enjoys reviewing the latest fitness gadgets, testing out activewear and sneakers, as well as debunking wellness/fitness myths. In my free time I enjoy ...

DIY Ram-Tester checks vintage 16- and 20-pin DRAMs used in TI-99/4A, C64, Amiga, Atari and others. Fast tests, OLED display, upgradable firmware. The retro-computing scene has a new bench tool worth ...