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5° objective prism in wood mount

5° objective prism in wood mount

Joel Hastings Metcalf
circa 1905
anamorphosis cards

anamorphosis cards

French
1770-1800
astronomical regulator

astronomical regulator

Simon Willard, Jr.
1832
astronomical regulator, no. 65

astronomical regulator, no. 65

Sigmund Riefler
1902
astronomical regulator, no. 394

astronomical regulator, no. 394

Richard F. Bond
circa 1867
brass and steel dividers

brass and steel dividers

French
1600-1650
conical prism on stand

conical prism on stand

French
1850-1880
Dudgeon-type sphygmograph

Dudgeon-type sphygmograph

French
1890-1910
electrified spangled tubes

electrified spangled tubes

French
circa 1790
Fusoris-type planispheric astrolabe

Fusoris-type planispheric astrolabe

French
second half of 16th century?
graphometer

graphometer

French
1675-1725
Helmholtz sound synthesizer base

Helmholtz sound synthesizer base

French
circa 1865
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The Collection of Historical Scientific Instruments
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p. 617-495-2779 • f. 617-496-5794
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