Dublin Core
Title
Black metal diaphragm & Concave lens (-10D)
Description
A photograph of an instrument divided radially into degrees. 3cm in diameter, with central slit 1.5cm long. and the other instrument with1cm in diameter, enclosed in a 3cm in diameter black rim. Rests in the base of the case, in a fitted compartment, located with a 2mm wide purple elastic webbing.
Date
c.1900s
Identifier
2008/4/3/4-5
Terms Of Use
