Ruling engine by Sir Thomas Merton, including gant
Ruling engine by Sir Thomas Merton, including gantry (diamond tool-holder) with Merton nuts at each end and 3 ruled brass cylinders (2 in box), 5 metrological gratings, 2 square gratings, moire' fringe grating and vernier, by Diffraction Gratings and Optics Ltd, stored in the following parts
- Object Number:
- Egan-Andrew, D.
- Permanent collection
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