An early 20th Century brass framed circular compass with sight prism mount, marked 02.Azimuth Circle No 2725.K, diameter 15cm.

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