Oscilloscope, Model EI-800, 15 MHz Subcategory_Clamps and Bossheads Four-finish Leslie's cube in tinplate

Four-finish Leslie's cube in tinplate at 13cm per side — blackened

the second universal-logic gate that complements the NAND for any digital-circuit construction

deflecting a pivoting cobalt-steel compass needle inside a rectangular conductor frame to show that current generates a magnetic field

Heavier-grade wire stripper with hardened cutting jaws

Oscilloscope, Model EI-800, 15 MHz Subcategory_Clamps and Bossheads Four-finish Leslie's cube in tinplateCompact 15 MHz single trace oscilloscope with backlit LCD digital readout, auto focus CRT, 200ns sweep, stable triggering to 30 MHz, and built in component and continuity testing.