Zeměměřické a astronomické přístroje používané na území ČR od 16. do konce 20. století

theodolite – Fromme

The manufacturer's name on the device
  • GEBR. FROMME WIEN

Interesting construction features

Information about the use of device

Information about the device condition

  • VÚGTK: S0135
  • Owner: Hornicko-geologická fakulta, VŠB-TUO
  • Manufacturer: Fromme
  • Made: 01.01.1890
  • Length: 160 mm
  • Width: 154 mm
  • Height: 205 mm
  • Weight: 1990 g
  • S/N: 376

  • cross hairs:
  • NK_004
  • telescope type: flip over
  • tripod connection: special
  • type of clamp: clamp on the axis
  • compensator: no
  • unite: ° ' "
  • the possibility of determining the elevation: yes
  • distance meter type: optical
  • construction of the distance meter: integrated
  • view in the telescope: inverted
  • variable telescope length: yes
  • telescope length with retracted eyepiece: 136 mm
  • telescope length with extended eyepiece: 155 mm
  • telescope diameter: 15 mm
  • minimum telescope focusing distance: 1300 mm
  • telescope magnification: 14
  • type of optical plummet: none
  • compass: attachable
  • compass design: exccentric
  • compass diameter: 90 mm
  • smallest division of the compass scale: 30'
  • horizontal circle diameter: 90 mm
  • main reading scale of the horizontal circle: vernier
  • number of reading scales of the horizontal circle: 1
  • the smallest segment of the horizontal circle: 2'
  • setting the horizontal circle to zero: none
  • vertical circle: yes
  • segment of the vertical circle: no
  • vertical circle diameter: 75 mm
  • main reading scale of the vertical circle: vernier
  • number of reading scales of the vertical circle: 1
  • the smallest segment of the vertical circle: 2'
  • cross level: yes
  • length of the cross level/level parallel with line of collimation: 40 mm
  • bubble length of the cross level/level parallel with line of collimation: 5 mm
  • length of the cross level/level perpendicular with line of collimation: 40 mm
  • bubble length of the cross level/level perpendicular with line of collimation: 5 mm
  • leveling vial: yes
  • length of leveling vial: 75 mm
  • bubble length of the leveling vial: 13 mm
  • striding level: no
  • altitude buble: no
  • designed for work: basic work