overall: 16 1/4 in x 7 in x 3 1/2 in; 41.275 cm x 17.78 cm x 8.89 cm
Object Name:
optical apparatus
Place made:
United States: New York, New York City
Date made:
1870-1895
Description:
Conical glass lens on a brass base designed to fit on an optical bench, with a "Wm. Grunow, New York" inscription. WIlliam Grunow (b. 1830) was a German-American optical instrument maker.
Ref: D.J. Warner, "Julius and William Grunow," <i>Rittenhouse</i> 3 (1989): 41-48.