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

theodolite – Dollond

The manufacturer's name on the device
  • Dollond London

Interesting construction features

Information about the use of device

Information about the device condition

  • VÚGTK: S0167
  • Owner: Národní technické muzeum
  • Manufacturer: Dollond
  • Made: 01.01.1802
  • Length: 315 mm
  • Width: 198 mm
  • Height: 320 mm
  • Weight: 5150 g
  • S/N: 

  • cross hairs:
  • NK_001
  • telescope type: reversible
  • tripod connection: special
  • type of clamp: endless
  • compensator: no
  • unite: ° ' "
  • the possibility of determining the elevation: no
  • view in the telescope: erected
  • variable telescope length: yes
  • telescope length with retracted eyepiece: 310 mm
  • telescope length with extended eyepiece: 330 mm
  • telescope diameter: 14 mm
  • minimum telescope focusing distance: 3450 mm
  • telescope magnification: 6
  • type of optical plummet: none
  • compass: integrated
  • compass design: circle
  • compass diameter: 115 mm
  • smallest division of the compass scale: 1°
  • horizontal circle diameter: 200 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: none
  • vertical circle: no
  • segment of the vertical circle: yes
  • segment's range of vertical circle: 180°
  • vertical circle diameter: 200 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: 1'
  • cross level: yes
  • length of the cross level/level parallel with line of collimation: 100 mm
  • bubble length of the cross level/level parallel with line of collimation: 42 mm
  • length of the cross level/level perpendicular with line of collimation: 100 mm
  • bubble length of the cross level/level perpendicular with line of collimation: 44 mm
  • leveling vial: yes
  • length of leveling vial: 135 mm
  • bubble length of the leveling vial: 58 mm
  • striding level: no
  • altitude buble: no
  • designed for work: basic work