Vintage Western Electric 14-B Impedance Resistance Box, Bridge, Nice
$500.00
PIEZO HEADPHONE FOR CRYSTAL AND REGEN RECEIVERS (HIGH IMPEDANCE)
$14.35
CU350/PT TA312/PT Field Phone Impedance Matching Network 5915003925981 Military
$39.98
TM 11-2646 Original Army Guide for Impedance Bridge TS-460C/U July 1951
$9.99
Vintage 1960s Siemens Impedance Bridge Amateur Radio Very Rare Item Junk
$2299.00
Guide TM 11-2634 Impedance Bridges TS-460/U, TS-460A/U TS-460B/U 1950 Good
$19.99
Timetrax Model 60 Watch Clock Beat Amplifier Diagnostic Tool w/ PICKUP Sensor
$69.50
Western Electric - 440-201 - Telephone Earpiece Receiver. Magnetic Low Impedance
$12.98
Home grown Antenna Impedance Meter from ham radio estate
$97.50
Singer Medical Impedance Analyzer MD-1 Audiometer MD 1
$195.95