Calendar regulator clock drawings and photographs
- Made:
- 1921-1923
"Loose-leaf booklet containing text, photographs and drawings of two calendar regulator clocks with gravity escapement made by Henry Hall Summers, c.1921-23"
Details
- Category:
- Time Measurement
- Object Number:
- 1968-624
- type:
- drawing and clock - regulator
- credit:
- Sir Geoffrey Summers and Sir Richard Summers
