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Brunton pocket mine surveying transit

Brunton pocket mine surveying transit

William Ainsworth & Sons, Inc.
1905-1938
case with instructions & tables for Moe Diamond Weight Calculator

case with instructions & tables for Moe Diamond Weight Calculator

German
circa 1951
Fedorow universal petrographical stage

Fedorow universal petrographical stage

Bausch & Lomb Optical Company
1937-1940
Goldschmidt two-circle reflecting goniometer

Goldschmidt two-circle reflecting goniometer

Peter Stoe
circa 1890
India ink dispenser

India ink dispenser

Theodore Alteneder & Sons
1930-1940
Keuffel & Esser Log Log Duplex slide rule

Keuffel & Esser Log Log Duplex slide rule

Keuffel & Esser Company
ca. 1915-1923
Keuffel & Esser Polyphase Duplex slide rule

Keuffel & Esser Polyphase Duplex slide rule

Keuffel & Esser Company
circa 1935
Lake Superior dip needle

Lake Superior dip needle

W. & L. E. Gurley
1950
Leitz AM petrographic compound microscope

Leitz AM petrographic compound microscope

Ernst Leitz (company)
circa 1937
Leitz integrating stage for petrographic microscope

Leitz integrating stage for petrographic microscope

Ernst Leitz (company)
circa 1930
Leroy lettering set

Leroy lettering set

Keuffel & Esser Company
circa 1954
mechanical stage

mechanical stage

Bausch & Lomb Optical Company
1940-1950
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The Collection of Historical Scientific Instruments
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