$300

Central Scientific CENCO Michelson Interferometer Vintage

$1650

19th Century Michael Faraday 1831 Induction Ring Replica Iron Copper Transformer

$15.99

Antique Keuffel & Esser K&E Slide Rule w/ Leather Case PAT 1900 1908 Scientific

$59.95

Vintage Thomson Indicating Wattmeter No 397109 Type P 1909 General Electric USA

$9.95

Fridge magnet vintage ad UFO detector 2.5 x 3.5" tin based magnet laminated

$310.68

Brass pocket / drum sextant and case – William Rothwell.

$35

Chicago Apparatus Company Resistance Decade Wood Box Vintage Lab 0-40 OHMS 1930s

$1299

Historic 1890's Edison System Ampere Meter From Early Power Station

$93.16

Antique rare Botanical Vasculum Botanists' collecting tin c1900

$424.92

Antique Persian Astrolabe With 4 Engraved Disks 19th - Early 20th century

$195.78

Antique Seederer-Kohlbusch Bench Model Beam Balance Scale

$350

C. 1900 Edwards 1872 Semaphore Annunciator * Antique Fire Alarm Signaling System