Eastern Science Supply, Co., Portable Equinoctical Sundial.
Eastern Science Supply, Co.
Portable Equinoctical Sundial.
Boston, 1930s.
Brass base enclosing a magnetic compass, stand with engraved dial plates and metal gnomon band. Maker's mark stamped to the underside of the base; compass lever broken, moderate pitting and wear, unidentified school's "Department of Physics" label partially abraded.
Eastern Science Supply, Co.
Portable Equinoctical Sundial.
Boston, 1930s.
Brass base enclosing a magnetic compass, stand with engraved dial plates and metal gnomon band. Maker's mark stamped to the underside of the base; compass lever broken, moderate pitting and wear, unidentified school's "Department of Physics" label partially abraded.
