Zeměměřické a astronomické přístroje používané na území ČR od 16. do konce 20. století
Instruments
Manufacturers
About project
instruments
astronomical-surveying instruments
Cirkumzenitál Nušl - Frič
manufacturers
J. & J. Frič
Cirkumzenitál Nušl - Frič
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Cirkumzenitál Nušl - Frič
Description
The manufacturer's name on the device
JOSEF & JAN FRIČ PRAGUE
Interesting construction features
Information about the use of device
Information about the device condition
Basic data
VÚGTK:
S0204
Owner:
Astronomický ústav AV ČR
Manufacturer:
J. & J. Frič
Made:
01.01.1922
Length:
550
mm
Width:
284
mm
Height:
398
mm
Weight:
19110
g
S/N:
Technical parameters
cross hairs:
telescope type:
non-removable
tripod connection:
special
type of clamp:
clamp on the axis
unite:
° ' "
variable telescope length:
no
telescope length with retracted eyepiece:
420
mm
telescope diameter:
63
mm
type of optical plummet:
none
compass:
none
horizontal circle diameter:
283
mm
main reading scale of the horizontal circle:
index
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
cross level:
no
length of the cross level/level parallel with line of collimation:
100
mm
bubble length of the cross level/level parallel with line of collimation:
25
mm
altitude buble:
no
striding level:
no
sensitivity of the alidade level:
100
"