Original Callendar and Griffiths Resistance Bridge, 1850-1900
- maker:
- Hugh Longbourne Callendar
Early form of Callendar and Griffiths bridge, unsigned, 1850-1900
Details
- Category:
- Heat
- Object Number:
- 1930-356
- Materials:
- box (wood), brass (copper, zinc alloy), copper (metal), solder and lead (metal)
- Measurements:
-
overall: 34 mm x 445 mm x 40 mm, , .375kg
- credit:
- Callendar, Mrs.