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Geometry set including set square belonging to Major J F Doelberg

Geometry set including set square belonging to Major J F Doelberg

circa 1900
Plotting scales in wooden box belonging to Major J F Doelberg

Plotting scales in wooden box belonging to Major J F Doelberg

c. 1900
Protractor, part of geometry set belonging to Major J F Doelberg

Protractor, part of geometry set belonging to Major J F Doelberg

c. 1900
Box for geometry set belonging to Major J F Doelberg

Box for geometry set belonging to Major J F Doelberg

c. 1900