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FPM Holding GmbH
Postfach 1145, D-09581 Freiberg
Hainichener Straße 2a, D-09581 Freiberg
Tel.: 0 37 31/27 14 35
Fax: 0 37 31/27 12 66
Internet: www.fpm.de
E-Mail: info@fpm.de


























Geologist`s Compass with mirror


Technical data 


Compass circle
Diameter 45 mm
scale value 2° (2 gon)
estimation 0,5° (0,5 gon)
Azimuth circle
diameter 22 mm
scale value 5° (5 gon)
estimation 1° (1 gon)
measuring range +90° (+100gon)
scale value 2° (2 gon)
estimation 0,5° (0,5 gon)
Contact edge
graduated length 70 mm
scale value 1 mm
Function data
initial oscillation time <50 sec
of the magnetic needle
accuracy of direction +0,5° (+0,5gon)
declination optional
tilting range of the 225° (250 gon)
dip measuring plate
circular level ca. 40´
tabular level ca. 60´
weight 0,280 kg
instrument 93 x 76 x 22 mm


  • General field-geological work
  • Special structural-geological, deposit-tectonic, and engineering-geological rockmechanical work
  • Can be used for route surveying, for the survey of natural and artificial openings above and below ground
  • For staking out and dimensioning holes
  • For the transfer of geological data into maps and plans
  • Rockwork as well as moderate-accuracy surveying

The geologist's compass with mirror is an extended version of the geologist's compass featuring a mirror on the internal surface of the lid and a front and back sight.

  • Ground magnetic needle placed on edge
  • Permanent locking of the magnetic system - can be released during measurement by depressing the push-button and should be used for shortening the setting time
  • Easy adjustment of the graduated circle - for each measuring technique and for setting declination values of any magnitude
  • Lockable inclinometer for inclination measurements of high accuracy
  • Colour coding on circle of altitude and magnetic needle (according to Clar) - unambiguous determination of the direction of dip of geological formations
  • Circular spirit level for levelling, lateral glass tube for measurement at points of difficult access
  • Dip measuring plate
    • reading of dip angle
    • protection for the glass cover