Microscope Fitting with Variable Apertures, Late 19th Century

Subject: Microscopy
Item type: Object
Provenance: Purchased from Dr. Reginald S. Clay with his collection. Part of 14 in typescript list.
Physical material: copper alloy; paint
Dimensions: Diameter: 44mm Height: 16mm Width: 64mm Depth: 44mm Weight: 43g
Inventory No: 26434
Accession Number: 1944-1/part

Description

Copper alloy fitting with hinge and rotating disc with variable apertures. Stored in black Japanned tin box.