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Diesel engine tester

Diesel engine tester

Teledyne teder stiffness tester

Teledyne teder stiffness tester

Winding tester

Winding tester

Model 750 Parker Print-Surf paper roughness tester, Manufactured by H.E. Messmer Limited, London England

Model 750 Parker Print-Surf paper roughness tester

Paper tear strength tester.

Paper tear strength tester

Screw cap lid torque tester in box by U G Closures & Plastics Ltd; from the Horlicks factory in Slough

Screw cap lid torque tester, from Horlicks factory

Unknown

Wratten ink tester for examining tricolour printing inks sold by Kodak Ltd., c.1928

Wratten ink tester for examining tricolour printing inks

circa 1928

Meg Insulation Tester 0-100 megohms, 500 volt, fitted on teak base.

Meg Insulation Tester 0-100 megohms

"Metrohm" insulation and continuity tester and separate parts to show construction

"Metrohm" insulation and continuity tester and separate parts to show construction

Kenley Stiffness Tester in wooden box, designed by Kenley Research laboratories

Kenley Stiffness Tester in wooden box

Teledyne teder stiffness tester, with plug component. Manufactured by PIRA, and Teledyne Industries, Inc., Geotech Division

Teledyne teder stiffness tester