Described in Negretti & Zambra's 1950 catalogue as 'of the highest qualty and workmanship and finish. Movement consisting of a specially formed set of diaphragms, fully compensated, operating lever mechanism to the pen-arm spindle. Jewelled pivots are provided to reduce friction to a minimum'.
Slighlty larger than the standard barograph, this fine example has a polished mahogany case with bevelled glass all round and the brass movement has been professionally cleaned. The serial number engraved on the brass baseplate is R/5305 and with the logo of NZ capitals merged together would suggest a manufacture date of just prior to WW2.
A selection of 6 months' supply of weekly charts included together a fresh bottle of ink and operation instructions.
A separate blank brass presentation plaque can be provided if required.
420mm wide x 210mm high x 235mm deep.