Leeds & Northrup Co. Model 330 Scientific Apparatus

Mfg. by Wheelco Instruments Co. Dimensions: 8.00 " W x 11.00 " H x 5.00 "D; 

5.75 x 5.75 x 5.5 inches - some damage to base

12.75 x 9 x 7.75 inches when closed

Vintage Leeds & Northrup Co Light beam Galvanometer Model 2420 in wooden case

Scientific Testing Equipment (6), Mid-Century wood case w/a Weston Illumination meter Model 603, Leeds & Northrup potentiometer, GE ac voltmeter, Industrial Instruments conductivity bridge, Hotpoint o

Two portable volt meter type pc, a Westinghouse (East Pittsburg,Pa) and a Leeds & Northrup co. Philadelphia.

A Wheatstone Bridge by Leeds & Northrup Co., Philadelphia, 20th Century, Together with a slide wire resistor, 20th Century. H: 2 1/2 W: 23 3/4 D: 6 1/4 in.

9 x 7.5 x 6 inches when closed

A D'Arsonval Galvanometer by Leeds & Northrup Co., Philadelphia, Early 20th Century. H: 9 D: 4 3/4 ins. Proceeds to benefit the Case Western Reserve University Dayton Miller Scholarship Fund.

2 LEEDS & NORTHRUP CO. REFLECTING GALVANOMETERS Two Leeds & Northrup Co. reflecting galvanometers. Serial numbers 1067355 and 207797. Weight: 9.25" Shipping / Pickup: Buyer Pick Up, 3rd Party

Leeds & Northrup Co. Three Decade Resistors

18 x 11 x 9 inches when covered

19.5 x 8.25 x 3.75 inches; untested

13.25 x 7.5 x 7.25 inches

24 x 7.5 x 5.25 inches when covered - some wear to case; untested

A Wheatstone Bridge by Leeds & Northrup Co., Philadelphia, 20th Century, and a Slide Wire Resistor, 20th Century. H: 2 1/2 W: 23 3/4 D: 6 1/4 in. Proceeds to benefit the Case Western Reserve Universit

Vintage Leeds & Northrup Co Potentiometer, 600 OHM Attenuation Box General Radio Co

Decade resistor box by Leeds & Northrup Co. Philadelphia. Patent No. 191685. Dimensions: 14.00 " W x 5.00 " H x 1.25 "D; 

An Electrical Resistor Decade Box by Leeds & Northrup Co., Philadelphia, 20th Century. Numbered 6203. Having copper fittings. H: 5 1/8 W: 8 1/4 D: 3 3/4 ins. Proceeds to benefit the Case Western Reser

1929, List No. 35, Chicago, IL, some pages ripped out.

Mirror centered compass dial, under glass dome with printed card stock degree ring marked L.E. Knot Apparatus Co. Scientific Supplies 36 Ashburton Place, Boston, mounted in cast aluminum frame, that i

Percision Apparatus co. Model ES-550 cathode ray oscillograph and Sylvania check-a- color.

21 mineral and other Earth science specimen sets, including Scientific Apparatus & Supplies Co., Inc. and New York Scientific Supply Co. Sets with mineral specimens including How Soils Are Formed, How

Vintage measuring device for surface tensions, etc. Iron and other metals. Labeled Central Scientific Co. Laboratory Apparatus, Chicago. 12" x 8" x 8 1/2".