$65

Leeds & Northrup Co. Wheatstone Bridge 4725 * Good Condition, Vintage

$307.99

Antique Jefferson Electric No 25 Coil Tester Chicago Ignition Tester Model T Era

$33.33

ANTIQUE BREWER'S SLIDE RULE

$129.99

Vintage Hilger & Watts Wooden Instrument Case Box Dovetail Brass Galvanometer UK

$39.99

Vintage Medical Electronic Ozone Generator Burton Scientific Equipt. Chicago

$40

Vintage Leeds & Northrup L&N 2666 Ayrton Galvanometer Shunt 10,000 Ohms

$120

1900s Industrial Electrical Knife Switch - Slate Base Wood Handle Steampunk

$26.21

Vtg J&J EMG Model M-55 Microvolts RMS Meter Bio-Medical Instrument Tool As Is

$29.95

Vintage Bowmar MX100 SCIENTIFIC BRAIN Calculator with Case and Instructions. 8

$37

Weather Guide Forecast Irving P Knick Vintage

$2150

CURTA CALCULATOR Type 2 in #'d Original Box w/ Can, Manuals & Booklets

$21

USA Standard Testing Sieve #30 Fisher Scientific 600 mm Brass