Zeměměřické a astronomické přístroje používané na území ČR od 16. do konce 20. století
levelling instrument – Spitra
The manufacturer's name on the device
- W. Spitra in Prag
- VÚGTK: S0002
- Owner: Národní technické muzeum
- Manufacturer: Spitra
- Made: 01.02.1850
- Length: 117 mm
- Width: 170 mm
- Height: 210 mm
- Weight: 2240 g
- S/N:
- cross hairs:
-
- telescope type: reversible
- tripod connection: special
- 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: 300 mm
- telescope length with extended eyepiece: 328 mm
- telescope diameter: 33 mm
- minimum telescope focusing distance: 6000 mm
- telescope magnification: 8
- horizontal circle: yes
- horizontal circle diameter: 107 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: yes
- segment's range of vertical circle: -5°-+5°
- main reading scale of the vertical circle: vernier
- number of reading scales of the vertical circle: 1
- the smallest segment of the vertical circle: 5'
- cross level: no
- leveling vial: no
- striding level: yes
- bubble length of the striding level: 115 mm
- bubble length of the striding level: 25 mm
- sensitivity of the striding level or leveling vial: 20 "
- designed for work: basic work
