Chelsea Holosteric Barometer A4 Skyhawk loose-leaf unbound manual reviews the

loose-leaf unbound manual reviews the basic information as well as in-depth technical information on both instruments

Inspection stamps of 1940 and 1942 can be seen inside the lid

This is an original course book from the American School of Aircraft Instruments

The cabinet design appears to be repurposed from that used by the Fl22861 Altitude Recorder/Barograph

an SBD pilot who went on to be an Assistant Secretary of the Navy and eventyally appointed by President Ronald Reagan as US Ambassador to Australia from 1981-85

Chelsea Holosteric Barometer A4 Skyhawk loose-leaf unbound manual reviews theThis is an authentic Holosteric Barometer made by Chelsea Clock. This Barometer pairs with the Chelsea Shipstrike Mechanical Clock (see our other listing). The Barometer has not been fully tested for accuracy. Measures 5 3 8 inches diameter and 3 3 8 inches deep.