A 19th Century gilded brass compensated pocket barometer with magnifying section to swivel glass above silvered register marked Aitchison, London & Provinces, diameter 7 cm, cased.

An early 20th Century brass gravity clock with glass dial with painted Arabic numerals, central pendulum, all

Lot 726
Sold for £180 hammer

Estimate £200-£250

A 20th Century leather cased pocket barograph by Boucart, Paris, with spare papers and key, length 12.5 cm, in

Lot 728
Estimate £200-£300

An early 20th Century brass microscope by Henry Crouch London N7261, double adjust glass slide, open base stan

Lot 759
Sold for £200 hammer

Estimate £200-£300