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Structure of mechanism |
| Function |
This scale, made by E. Ducretet & Company, has a metal beam whose movement is limited by a stand. There is a pan suspended from each end of the beam. These pans are equipped with hooks on their underside. A long needle attached to the middle of the beam points downwards and moves in front of a small graduated rule.
The scale rests on a tripod, which has a stop screw, to block the beam’s movement, and a spirit level. |
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Application |
| Examples of application |
This scale was used during practical classes for future teachers at the men’s and women’s teacher training colleges in Aurillac (Cantal), now the University Institute of Teacher Training. |
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