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

theodolite – Fennel

The manufacturer's name on the device
  • Otto Fennel Söhne in Cassel D.R.P. No122901

Interesting construction features

Information about the use of device

Information about the device condition

  • VÚGTK: S0137
  • Owner: Hornicko-geologická fakulta, VŠB-TUO
  • Manufacturer: Fennel
  • Made: 01.01.1900
  • Length: 375 mm
  • Width: 215 mm
  • Height: 290 mm
  • Weight: 6930 g
  • S/N: 5358; D.R.P. 122901

  • cross hairs:
  • NK_035
  • telescope type: reversible
  • tripod connection: tribrach
  • 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: 375 mm
  • telescope length with extended eyepiece: 415 mm
  • telescope diameter: 35 mm
  • minimum telescope focusing distance: 3200 mm
  • telescope magnification: 22
  • type of optical plummet: none
  • compass: none
  • horizontal circle diameter: 170 mm
  • main reading scale of the horizontal circle: vernier
  • number of reading scales of the horizontal circle: 2
  • the smallest segment of the horizontal circle: 1'
  • setting the horizontal circle to zero: repeating
  • vertical circle: no
  • segment of the vertical circle: no
  • cross level: yes
  • length of the cross level/level parallel with line of collimation: 65 mm
  • bubble length of the cross level/level parallel with line of collimation: 15 mm
  • length of the cross level/level perpendicular with line of collimation: 65 mm
  • bubble length of the cross level/level perpendicular with line of collimation: 15 mm
  • leveling vial: yes
  • length of leveling vial: 100 mm
  • bubble length of the leveling vial: 30 mm
  • striding level: no
  • altitude buble: no
  • sensitivity of the striding level or leveling vial: 35 "
  • sensitivity of the alidade level: 120 "
  • designed for work: basic work