Zeměměřické a astronomické přístroje používané na území ČR od 16. do konce 20. století
levelling instrument – Spitra
The manufacturer's name on the device
- O. SPITRA PRAGUE
- VÚGTK: S0003
- Owner: Národní technické muzeum
- Manufacturer: Spitra
- Made: 01.01.1880
- Length: 76 mm
- Width: 127 mm
- Height: 106 mm
- Weight: 640 g
- S/N:
- telescope type: non-removable
- tripod connection: pin with 4 horizontal screws
- type of clamp: none
- compensator: no
- unite: ° ' "
- elevation screw: yes
- view in the telescope: inverted
- variable telescope length: yes
- telescope length with retracted eyepiece: 158 mm
- telescope length with extended eyepiece: 170 mm
- telescope diameter: 25 mm
- minimum telescope focusing distance: 3600 mm
- telescope magnification: 8
- horizontal circle: yes
- horizontal circle diameter: 77 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: 10'
- segment of the vertical circle: no
- cross level: no
- leveling vial: yes
- length of leveling vial: 97 mm
- bubble length of the leveling vial: 21 mm
- sensitivity of the striding level or leveling vial: 80 "
- designed for work: low precise work
