Galena Crystal in a tin

Fixed Detectors

Philmore Crystals & Cat's Whisker

Work Bench Color Code & Ohms law Aids

"A" & "B" Battery Tester

Sears "A" Battery Tester

Yankee Volt / Ammeter

Sterling Tube Tester

GE Type DP9 DC Ammeter

Weston model 433 AC Ammeter

Manuals for Weston 432 (1923) & DC Panel Meters (1923)

Weston

Westinghouse PX-4 DC Voltmeter

Jefferson Tube Rejuvenator

Weston Type 45 MilivoltMeter

Framm Multi-Reed Frequency Meter

Weston Model 280 MiliAmmeter & VoltMeter

Leeds & Northrup Decade Box

Jefferson Tube Tester

MilliAmmeter Test Set

Weston Model 341 AC/DC Voltmeter

Manuals for Weston 310 (1922) & Weston 370 (1923)

Weber Model 30 Tube Tester

Thompson/GE Type P AC Ammeter (1901) & Voltmeter (1897)

SECO Tube Tester

Solar Capacitor Tester

GE Type P3 Wattmeter & Ad from 1926 A.I.E.E. Journal

HeathKit C-3 Capacitor Tester

Hickock #419 Low Range Ohmeter