A 20th Century diver's Admiral wrist pressure gauge together with a similar naval wrist compass with internal gimble compass dial within a clear Perspex surround together with a Danish hand bearing compass, diameter 12cm (3)

An early 20th Century brass telescope by Ross London, 3 to 9 variable power, No 68777, 56cm in stained pine ca

Lot 290
Estimate £80-£120

A late 19th Century pocket barometer, compass and thermometer by Mann Gloucester in fitted leather case, width

Lot 296
Sold for £190 hammer

Estimate £80-£120

A late 19th Century brass cased compensated pocket compass by Negretti and Zambra London N7810 together with a

Lot 300
Sold for £150 hammer

Estimate £80-£120