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
- JOSEF & JAN FRIČ PRAHA
- VÚGTK: S0052
- Owner: Národní technické muzeum
- Manufacturer: J. & J. Frič
- Made: 01.01.1890
- Length: 265 mm
- Width: 110 mm
- Height: 185 mm
- Weight: 1850 g
- S/N:
- cross hairs:
-
- telescope type: reversible
- tripod connection: tribrach
- type of clamp: clamp on the axis
- compensator: no
- unite: ° ' "
- elevation screw: yes
- construction of the distance meter: N/A
- view in the telescope: erected
- variable telescope length: yes
- telescope length with retracted eyepiece: 265 mm
- telescope length with extended eyepiece: 290 mm
- telescope diameter: 30 mm
- minimum telescope focusing distance: 3000 mm
- telescope magnification: 28
- horizontal circle: yes
- 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: 1'
- segment of the vertical circle: no
- cross level: no
- length of the cross level/level perpendicular with line of collimation: 60 mm
- bubble length of the cross level/level perpendicular with line of collimation: 10 mm
- leveling vial: yes
- length of leveling vial: 80 mm
- bubble length of the leveling vial: 18 mm
- striding level: no
- sensitivity of the striding level or leveling vial: 20 "
- designed for work: basic work
