second hand tools

SPEED MEASURING GAUGE ACCURATELY DETERMINES THE REVOLUTIONS OF SHAFTING

Seaton, Devon, England

 
AN UNUSUAL & TWIN WHEELED FINE SPEED MEASURING GAUGE. ACCURATELY DETERMINES THE REVOLUTIONS OF SHAFTING, ETC.
GRADUATED IN TENS & HUNDREDS. PROBABLY DATES FROM THE 1920/30's PERIOD.
UNSIGNED BUT PROBABLY OF SWISS OR FRENCH ORIGIN.


£28
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