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: S0013
- Owner: Národní technické muzeum
- Manufacturer: J. & J. Frič
- Made: 01.01.1915
- Length: 166 mm
- Width: 209 mm
- Height: 265 mm
- Weight: 5530 g
- S/N: 866
- telescope type: reversible
- tripod connection: tribrach
- type of clamp: clamp on the axis
- compensator: no
- unite: ° ' "
- elevation screw: yes
- view in the telescope: inverted
- variable telescope length: yes
- telescope length with retracted eyepiece: 374 mm
- telescope length with extended eyepiece: 405 mm
- telescope diameter: 47.5 mm
- minimum telescope focusing distance: 5730 mm
- telescope magnification: 40
- horizontal circle: yes
- horizontal circle diameter: 151 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: 30"
- segment of the vertical circle: no
- main reading scale of the vertical circle: vernier
- number of reading scales of the vertical circle: 1
- cross level: no
- leveling vial: yes
- length of leveling vial: 161 mm
- bubble length of the leveling vial: 37 mm
- striding level: yes
- bubble length of the striding level: 44 mm
- sensitivity of the striding level or leveling vial: 10 "
- designed for work: basic work
