Zeměměřické a astronomické přístroje používané na území ČR od 16. do konce 20. století
tachymetre – J. & J. Frič
The manufacturer's name on the device
- JOS. & JAN FRIČ
- VÚGTK: S0046
- Owner: Národní technické muzeum
- Manufacturer: J. & J. Frič
- Made: 01.01.1910
- Length: 210 mm
- Width: 123 mm
- Height: 242 mm
- Weight: 2240 g
- S/N: 1262
- telescope type: flip over
- tripod connection: tribrach
- type of clamp: clamp on the axis
- compensator: no
- unite: ° ' "
- distance meter type: optical
- construction of the distance meter: integrated
- autoreduction of the length: no
- view in the telescope: inverted
- variable telescope length: yes
- telescope length with retracted eyepiece: 210 mm
- telescope length with extended eyepiece: 230 mm
- telescope diameter: 30 mm
- minimum telescope focusing distance: 6400 mm
- telescope magnification: 20
- type of optical plummet: none
- compass: none
- horizontal circle diameter: 112 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'
- setting the horizontal circle to zero: none
- vertical circle: no
- segment of the vertical circle: yes
- vertical circle diameter: 50 mm
- main reading scale of the vertical circle: vernier
- number of reading scales of the vertical circle: 1
- the smallest segment of the vertical circle: 1'
- cross level: yes
- length of the cross level/level parallel with line of collimation: 60 mm
- bubble length of the cross level/level parallel with line of collimation: 10 mm
- 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
- altitude buble: no
- leveling vial: yes
- length of leveling vial: 75 mm
- bubble length of the leveling vial: 25 mm
- striding level: no
- sensitivity of the striding level or leveling vial: 20 "
- designed for work: basic work
