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PORTABLE
ALTIMETER   /  BAROMETER
Diameter = 60 mm   /   2_3/8"


                 The Company's  LOGO = TC  ( ??? )

RING is turnable for ZERO SETTING   -   SCALES in MILLIBAR / METER

              There is also ANOTHER VERSION in the Collection ...
              w/o cases:  Instruments are mountable on a dashboard
impressum:
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© C.HAMANN      http://public.BHT-Berlin.de/hamann        07/07/16