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
- VÚGTK: S0042
- Owner: Národní technické muzeum
- Manufacturer: J. & J. Frič
- Made: 01.01.1925
- Length: 270 mm
- Width: 207 mm
- Height: 350 mm
- Weight: 6150 g
- S/N: 2351
- cross hairs:
-
- telescope type: flip over
- tripod connection: special
- 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: 265 mm
- telescope length with extended eyepiece: 300 mm
- telescope diameter: 40 mm
- minimum telescope focusing distance: 2700 mm
- telescope magnification: 28
- type of optical plummet: none
- compass: none
- horizontal circle diameter: 150 mm
- main reading scale of the horizontal circle: reading microscope
- number of reading scales of the horizontal circle: 2
- the smallest segment of the horizontal circle: 20"
- setting the horizontal circle to zero: repeating
- vertical circle: yes
- vertical circle diameter: 125 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: 20"
- cross level: yes
- length of the cross level/level parallel with line of collimation: 70 mm
- bubble length of the cross level/level parallel with line of collimation: 11 mm
- length of the cross level/level perpendicular with line of collimation: 70 mm
- bubble length of the cross level/level perpendicular with line of collimation: 12 mm
- altitude buble: no
- leveling vial: yes
- length of leveling vial: 85 mm
- bubble length of the leveling vial: 18 mm
- striding level: no
- sensitivity of the striding level or leveling vial: 20 "
- sensitivity of the alidade level: 60 "
- designed for work: basic work
