Title
optical bench screen
Identifier
ABDNP:201222a
Description
Small metal, painted black, circular screen with groove in base and screw to tighten it around an optical bench.
Date
1920-1960
Format
height 65 mm, length 23 mm, width 60 mm
metal
Creator
Unknown
UUID
0197ff23-9552-497e-906e-817a4ff0f875