country obtained from

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  Australia (1) Belgium (2) Canada (1) Germany (2) Hungary (2) Netherlands (4) United Kingdom (2) United States (5)

graduation

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  % (1) deg (10) gon / grad (5) m (1) mil (6400) (1)

fine reading

•  direct (analog) (5)
•  drum micrometer (3)
•  scale micrometer (4)
•  scale micrometer (double) (6)
•  vernier (double) (1)
•  vernier (single) (1)

Type of use

•  Home / hobby (2)
•  Military (1)
•  Survey (15)

Material

•  Brass (5)
•  Steel (6)

image direction

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  inverted (10) upright (4)