Zeměměřické a astronomické přístroje používané na území ČR od 16. do konce 20. století
levelling instrument – J. & J. Frič
The manufacturer's name on the device
- Jos. & Jan Frič
- VÚGTK: S0020
- Owner: Národní technické muzeum
- Manufacturer: J. & J. Frič
- Made: 01.01.1895
- Length: 106 mm
- Width: 106 mm
- Height: 152 mm
- Weight: 1400 g
- S/N:
- cross hairs:
-
- telescope type: non-removable
- tripod connection: tribrach
- type of clamp: peripheral clamp
- compensator: no
- unite: ° ' "
- elevation screw: yes
- view in the telescope: inverted
- variable telescope length: yes
- telescope length with retracted eyepiece: 241 mm
- telescope length with extended eyepiece: 261 mm
- telescope diameter: 32 mm
- minimum telescope focusing distance: 3600 mm
- telescope magnification: 16.6
- horizontal circle: yes
- horizontal circle diameter: 89 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: 1'
- segment of the vertical circle: no
- cross level: yes
- length of the cross level/level parallel with line of collimation: 47 mm
- bubble length of the cross level/level parallel with line of collimation: 7 mm
- length of the cross level/level perpendicular with line of collimation: 47 mm
- bubble length of the cross level/level perpendicular with line of collimation: 7 mm
- leveling vial: yes
- length of leveling vial: 93 mm
- bubble length of the leveling vial: 24 mm
- striding level: no
- sensitivity of the striding level or leveling vial: 30 "
- designed for work: basic work
