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Empire Datum Frame Rule with parallelogram
MANUFACTURING AND DISPENSING EQUIPMENT
datum rule
M. Wiseman & Company Ltd
Europe: United Kingdom
20th c.
metal
overall: 203 x 72 mm

Datum rule. Metal with shiny metal point-of-contact bars.


2001.281

Gift of Arthur C. Mawson in memory of H.P. Southcott, 2001



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