Scientific

WW2 PORTABLE ALTIMETER CALIBRATOR BY MUNRO No 295 c1940
Aircraft Barometer Military New and Updated Scientific Technology
WW2 PORTABLE ALTIMETER CALIBRATOR BY MUNRO No 295 c1940
PRECISION ANEROID MINING BAROMETER BY NEGRETTI & ZAMBRA No P/111671 c1950
Archive Scientific Technology Vavasseur Archive
PRECISION ANEROID MINING BAROMETER BY NEGRETTI & ZAMBRA No P/111671 c1950
EXPERIMENTAL ANEROID BAROMETER BY NEGRETTI & ZAMBRA c1920
Scientific Technology Vavasseur Archive
EXPERIMENTAL ANEROID BAROMETER BY NEGRETTI & ZAMBRA c1920