Two light compressors for Microscope by Ross?, English, c. 1850-75

Subject: Microscopy
Item type: Object
Makers: ? Ross
Provenance: Not ascertained. Probably belongs with Ross micr. Bl. 100.
Primary inscriptions: Compressor signed "Ross, London". Micrometer signed "Georges Oberhaeuser, Paris."
Physical material: Brass
Dimensions: Diameter: 43mm Height: 35mm Weight: 118g
Inventory No: 35854

Description

Two light compressors, one of which is held in a copper alloy container.