


Parallel ruler, made by Joseph Halden Co. Ltd, Manchester.
Details
- Category:
- Mathematics
- Object Number:
- Y1979.6.2
- Materials:
- metal (unknown) and wood (unidentified)
- Measurements:
-
box: 34 mm x 255 mm x 70 mm, 709 g
- taxonomy:
-
- furnishing and equipment
- measuring device - instrument
- ruler - measuring device