Antique, Scientific and Technical Instruments

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Antique, Scientific and Technical Instruments

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Lot 17

A Cenco Synchronous Spark Timer with Power Cord by Central Scientific Co., Chicago, 20th Century.

17A Cenco Synchronous Spark Timer with Power Cord by Central Scientific Co., Chicago, 20th Century.
Gray's Auctioneers

A Cenco Synchronous Spark Timer with Power Cord by Central Scientific Co., Chicago, 20th Century. 115v, 60cy, and 120 sparks per second. H: 10 ...

Lot 178

A Demonstration Pendulum, Late 19th/Early 20th Century. H: 33 1/2 W: 14 3/4 D: 7 1/2 ins.

178A Demonstration Pendulum, Late 19th/Early 20th Century. H: 33 1/2 W: 14 3/4 D: 7 1/2 ins.
Gray's Auctioneers

A Demonstration Pendulum, Late 19th/Early 20th Century. H: 33 1/2 W: 14 3/4 D: 7 1/2 ins. Proceeds to benefit the Case Western Reserve Unive...

Lot 196

A Door Bell, Late 19th/Early 20th Century. H: 6 3/4 ins.

196A Door Bell, Late 19th/Early 20th Century. H: 6 3/4 ins.
Gray's Auctioneers

A Door Bell, Late 19th/Early 20th Century. H: 6 3/4 ins. ...[more]

Lot 216

A Reflection Diffraction Grating with Ruled Area Measuring ca. 1.9 x 1.4 inches, 20th Century.

216A Reflection Diffraction Grating with Ruled Area Measuring ca. 1.9 x 1.4 inches, 20th Century.
Gray's Auctioneers

A Reflection Diffraction Grating with Ruled Area Measuring ca. 1.9 x 1.4 inches, 20th Century. Grating mounted in a heavy brass bracket with regis...

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