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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: 14 x 203 x 71 mm
2001.79
MANUFACTURING AND DISPENSING EQUIPMENT
datum rule
M. Wiseman & Company Ltd
Europe: United Kingdom
20th c.
metal
overall: 14 x 203 x 71 mm
Silver-coloured metal rule. Printed scales on upper side. Reverse side covered in green felt. Parallel bars pivoted from sides with adjustable width.
2001.79
Gift of Mr Nigel J. Austin, FSMC, FBOA, 2001