Cotton-type range finder mark II by E.R. Watts & Son.
- Scientific Instruments & Research
- Object Number:
- brass (copper, zinc alloy), glass, metal (unknown), paper (fibre product) and wood (unidentified)
Instrument: 264 mm x 70 mm,
case: 63 mm x 285 mm x 87 mm,
- naval instrument
- Gift of Mrs. H. Hargreaves