Scientific instruments
19 topics
- Calculating machines (0)
- Camera obscura (0)
- Clocks and watches (8)
- Double horizontal dial (3)
- Globes (3)
- Hydrometer (0)
- Lenses (0)
- Microscopes (4)
- Napier’s bones (0)
- Pantograph (“Parallelogram”) (0)
- Protractor (1)
- Scotoscopes (5)
- Slide rule (6)
- Spectacles (2)
- Spy-glasses (0)
- Terrella (6)
- Thermometer (3)
- Tube spectacles (0)
- Wren’s perspective drawing instrument (0)
Numbers in brackets indicate number of annotations.