Objects & Instruments
Antique scientific instruments and calculating and measuring devices, including compasses, sundials, rulers, squares, apothecary bottles, microscopes, medical devices, and other objects. Also including books on scientific instruments and devices.
Willis, J. H. | The World's Time at a Glance. The Willis Indicator.
Overview & Condition A delightful world time calculator produced by J. H. Willis & Company, probably during the 1930s to complement the world time clocks that the firm produced...
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