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Stage micrometer by W. Watson and Sons Ltd.

Stage micrometer by W. Watson and Sons Ltd.

1871-1900
Eyepiece micrometer

Eyepiece micrometer

1890-1900
Micrometer for petrological sections

Micrometer for petrological sections

1890-1900
double image eyepiece micrometer

double image eyepiece micrometer

1784-1798
C V Boys' radio-micrometer, with outer casing removed, 1907.

C V Boys' radio-micrometer, with outer casing removed, 1907.

1907
Micrometer, possibly for measuring lenses

Micrometer, possibly for measuring lenses

1850-1940
Micrometer, possibly for measuring lenses

Micrometer, possibly for measuring lenses

1850-1940
Stage micrometer by R. & J. Beck Ltd.

Stage micrometer by R. & J. Beck Ltd.

1950-1970
Boys radio-micrometer made in 1907 by, The Cambridge Scientific Instrument Co. Ltd., Cambridge, England, no.5426 with wooden box (sighting tube and several nuts missing)

C V Boys' radio-micrometer, with outer casing removed, 1907.

1907
Micrometer, for eyepiece, in white case

Micrometer, for eyepiece

Micrometers, 2, engraved on slides, each in case

Micrometers, 2

Two centimetre dental amalgam micrometer, in case, U.S.A., 1880-1914

Two centimetre dental amalgam micrometer

1880-1914