U.S. ARMY WWI SURVEY POCKET BAROMETER-ALTIMETER J.HICKS
- Source: eBay
This instrument has been ultrasonically cleaned, then sparingly lubricated with moebious clock oil to provide many years of trouble free service in weather predicting aboard your vessel. Finally it has been precision calibrated in my IDEAL-AEROSMITH calibration chamber to provide complete accuracy.Check out the calibration report for assurance of accuracy.
READ THE "ABOUT ME" PAGE FOR PICTURES OF MY CHAMBER AND GAUGE CALIBRATION BENCH
THE REASON FOR THE"STRANGE" READING ON THE DIALS OF MY INSTRUMENTS IS THAT I LIVE AT 4400 FEET ABOVE SEA LEVEL. THE AVERAGE AMBIENT BAROMETRIC PRESSURE IS 25.5... read more