Envelope for Standard RMS Screw and Chaser for Threading, by Whitworth?, Late 19th Century

Inventory Number 63522

Acknowledgement: © History of Science Museum, University of Oxford, inv.63522

Subject: Microscopy
Item type: Object
Makers: J. Whitworth
Provenance: Purchased from Dr. Reginald S. Clay with his collection. Item 21on typescript list.
Primary inscriptions: On chaser: 'R.M.S./36/STANDARD', and on threader: 'R.M.S./STANDARD/36' and '771' on other side'.
Physical material: Paper
Object type: Microscope accessory
Dimensions: Diameter: 20mm Height: 164mm Width: 133mm Depth: 15mm Weight: 1g
Inventory No: 63522
Accession Number: 1944-1/part

Envelope - An envelope in which the other parts are contained.