bi-convex lens on telescoping brass stand
Date: 1850-1880
Inventory Number: 1997-1-1563
Classification: Lens
Dimensions:42.1 × 13.6 × 11.5 cm (16 9/16 × 5 3/8 × 4 1/2 in.)
Description:
Bi-convex lens mounted in a swiveling brass frame, the latter mounted atop a telescoping brass stand.
The base is marked "01" in black ink.