Elektor Team
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Philips PR9150/PR9151 Surface Roughness Testers

Just scratching the surface of 1950s metalworking

Philips PR9150/PR9151 Surface Roughness Testers
In the mid-1950s, the Philips Netherlands company was renowned for the outstanding quality of all mechanical assemblies and parts in their test & measurement and communications equipment. Philips’ ‘PR’ series of equipment was electronic for sure, but not limited to electronics—serving the chemical, medical and mechanical industries and research institutions, which represented a large and lucrative market at the time.
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