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
- Josef & Jan Frič
- VÚGTK: S0041
- Owner: Národní technické muzeum
- Manufacturer: J. & J. Frič
- Made: 01.01.1930
- Length: 182 mm
- Width: 128 mm
- Height: 225 mm
- Weight: 3350 g
- S/N: 6028
- telescope type: flip over
- tripod connection: tribrach
- type of clamp: clamp on the axis
- compensator: no
- unite: gon
- view in the telescope: inverted
- variable telescope length: no
- telescope length with retracted eyepiece: 178 mm
- telescope diameter: 35 mm
- minimum telescope focusing distance: 1200 mm
- telescope magnification: 25
- type of optical plummet: none
- compass: none
- horizontal circle diameter: 110 mm
- main reading scale of the horizontal circle: vernier
- number of reading scales of the horizontal circle: 2
- the smallest segment of the horizontal circle: 1'
- setting the horizontal circle to zero: two-axis
- vertical circle: yes
- vertical circle diameter: 90 mm
- main reading scale of the vertical circle: vernier
- number of reading scales of the vertical circle: 2
- the smallest segment of the vertical circle: 1'
- cross level: yes
- length of the cross level/level parallel with line of collimation: 40 mm
- bubble length of the cross level/level parallel with line of collimation: 5 mm
- length of the cross level/level perpendicular with line of collimation: 40 mm
- bubble length of the cross level/level perpendicular with line of collimation: 5 mm
- altitude buble: no
- length of leveling vial: 72 mm
- bubble length of the leveling vial: 20 mm
- striding level: no
- sensitivity of the striding level or leveling vial: 20 "
