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

Inventory Number 63522

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

Subject
Microscopy
Item type
Object
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
Steel
Object type
Microscope accessory
Dimensions
Diameter: 20mm Weight: 67g
Inventory No
63522
Accession Number
1944-1/part

Description

Standard RMS screw and chaser for threading with note and envelope, by Whitworth?, late 19th century. Object consists of four parts: a plug-shaped screw; the steel chaser which is shaped like a spear; a descriptive handwritten note on light green lined paper; and an envelope in which the other parts are contained.

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