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: S0027
- Owner: Klára Vacková
- Manufacturer: J. & J. Frič
- Made: 01.01.1900
- Length: 102 mm
- Width: 238 mm
- Height: 155 mm
- Weight: 1320 g
- S/N: 1530 Praha
- cross hairs:
-
- telescope type: non-removable
- 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: 240 mm
- telescope length with extended eyepiece: 260 mm
- telescope diameter: 31 mm
- minimum telescope focusing distance: 3000 mm
- telescope magnification: 15
- 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
- leveling vial: yes
- length of leveling vial: 93 mm
- bubble length of the leveling vial: 23 mm
- striding level: no
- sensitivity of the striding level or leveling vial: 25 "
- designed for work: basic work
