optical tube
Date: 1860-1880
Inventory Number: 1996-1-0703a
Classification: Optical Accessory
Dimensions:8 × 7.8 × 10.7 cm (3 1/8 × 3 1/16 × 4 3/16 in.)
Description:
Brass cylinder fixed on an attachment that slides on a specially designed track. This optical tube is similar to the ones found on the projector with inventory number 1996-1-0705. Could even be used with a polarimeter, such as the one described in 1997-1-1477b.
A round circle painted in white suggests this instrument was used at Radcliffe College.