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

Cirkumzenitál Nušl - Frič

The manufacturer's name on the device
  • JOSEF & JAN FRIČ PRAGUE

Interesting construction features

Information about the use of device

Information about the device condition

  • VÚGTK: S0204
  • Owner: Astronomický ústav AV ČR
  • Manufacturer: J. & J. Frič
  • Made: 01.01.1922
  • Length: 550 mm
  • Width: 284 mm
  • Height: 398 mm
  • Weight: 19110 g
  • S/N: 

  • cross hairs:
  • NK_041
  • telescope type: non-removable
  • tripod connection: special
  • type of clamp: clamp on the axis
  • unite: ° ' "
  • variable telescope length: no
  • telescope length with retracted eyepiece: 420 mm
  • telescope diameter: 63 mm
  • type of optical plummet: none
  • compass: none
  • horizontal circle diameter: 283 mm
  • main reading scale of the horizontal circle: index
  • number of reading scales of the horizontal circle: 1
  • the smallest segment of the horizontal circle: 1°
  • setting the horizontal circle to zero: none
  • vertical circle: no
  • cross level: no
  • 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: 25 mm
  • altitude buble: no
  • striding level: no
  • sensitivity of the alidade level: 100 "