Vintage Scleroscope Hardness Tester By Coats Tool Company
This fantastic looking scientific instrument is a Vintage Scleroscope Hardness Tester By Coats Tool Company. It is exquisitely engineered and comes with its original wood carry box.
Approximate Box Size:-
- Width: 19.6cm
- Height: 50cm
- Depth: 20.3cm
The instrument is defined as a portable piece of testing equipment but its incredibly heavy!
A scleroscope is a device used to measure rebound hardness based on the elasticity of a material without marking the material under test. The device was invented in 1907 by Shore Instruments Manufacturing Company: see schematic from the original patent: .
This particular instrument, No. 22295, probably dates to the 1920s and is in wonderful condition. We think that a few parts are missing, including the rubber pressure squeeze bulb, glass from the magnifier, and the scale: replacements could easily be found for the first two.
The wooden box has internal scuffs and scratches commensurate with age and use.
It still makes for a very interesting display item. A piece of Scientific and Engineering history!
There are printed and metal labels on the instrument with the following information:-
Coats Machine Tool Co. Ltd, London, SW1 No. 22295
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