This is an early 20th Century barograph with a polished walnut hardwood case, bevelled glass all round and a chart drawer to the base. A fixed panel below the drawer indicates the instrument was probably made prior to WW1. A small mercury thermometer with the supplier's name, J. M. Bryson, Edinburgh, is attached to the brass baseplate along with a large ink botle. The instrument sits on splayed feet creating a nice balanced appearance.
A quantity of weekly charts is included together with
a fresh bottle of special blue recording ink and a reprinted
1930s pamphlet by Negretti & Zambra describing operating
instructions and how to interpret typical chart recordings.
 
375mm wide  220mm high x 232mm deep