Lot 251 , An early 20th century mahogany cased barograph by an unknown maker, with a quantity of unused papers.

An early 20th century mahogany cased barograph by an unknown maker, with a quantity of unused papers.
£100-150

Condition:
Mahogany frame with some effects of sun-fading; all glasses good, not bevelled. Has been set going over some seven hours and appears to be working, expressly without guarantee.