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Paper burst tester made by the Ashcroft Manufacturing Co. New York c.1912

Paper burst tester made by the Ashcroft Manufacturing Co. New York c.1912

circa 1912
Southworth Burst Tester

Southworth Burst Tester

1890-1910
Paper burst tester made by the Ashcroft Manufacturing Co. New York c.1912, with leatherette box. Patented 31 December 1912. Sold in the UK by HB Legge and Co, London

Paper burst tester made by the Ashcroft Manufacturing Co.

circa 1912