Proportional dividers
1930
- Title
- Proportional dividers
- Collection
- Caltech Images Collection
- Series
- Scientific Instrument Photographs
- Identifier
- ST-GH-037
- Dates
- 1930
- Extents
- 1 photographs
- Abstract
- A Lietz Company rack and pinion calibrated proportional dividers. Housed in mahogany box.