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Map measurer

1876

Map measurer with 10 paper dials

1876

Pocket mapmaker

Opisometer patented in France

1920-1950
Opisometer by Elliott Bros., London, brass and electrum, in original wooden box

Opisometer by Elliott Bros.

Opisometer, simple map measurer by W. F. Stanley, Great Turnstile, London, 1876.

Opisometer or map measurer

1876