Old Survey Instruments

Old Survey InstrumentsOld Survey InstrumentsOld Survey Instruments
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    • Home
    • Theodolite Gallery
    • Level Gallery
    • Mounted Compass Gallery
    • Hand Compass Gallery
    • Drafting Gallery
    • Clino Gallery
    • Survey Cross Gallery
    • Misc Gallery
    • Tripods Gallery
    • Chains Gallery

Old Survey Instruments

Old Survey InstrumentsOld Survey InstrumentsOld Survey Instruments
  • Home
  • Theodolite Gallery
  • Level Gallery
  • Mounted Compass Gallery
  • Hand Compass Gallery
  • Drafting Gallery
  • Clino Gallery
  • Survey Cross Gallery
  • Misc Gallery
  • Tripods Gallery
  • Chains Gallery

  

 

 

Graphometer
A graphometer is used for angle measurements. the device is mounted on a Jacobs staff via a ball and socket joint and comprises a graduated semi circle carrying two alidades with sights, one attached to the semi circle, the other rotating on the graduation.

In effect it is a half circumferentor.

There is no makers name on this graphometer.