Zeměměřické a astronomické přístroje používané na území ČR od 16. do konce 20. století
Instruments
Manufacturers
About project
instruments
theodolite
manufacturers
Dollond
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theodolite – Dollond
Description
The manufacturer's name on the device
Dollond London
Interesting construction features
Information about the use of device
Information about the device condition
Basic data
VÚGTK:
S0167
Owner:
Národní technické muzeum
Manufacturer:
Dollond
Made:
01.01.1802
Length:
315
mm
Width:
198
mm
Height:
320
mm
Weight:
5150
g
S/N:
Technical parameters
cross hairs:
telescope type:
reversible
tripod connection:
special
type of clamp:
endless
compensator:
no
unite:
° ' "
the possibility of determining the elevation:
no
view in the telescope:
erected
variable telescope length:
yes
telescope length with retracted eyepiece:
310
mm
telescope length with extended eyepiece:
330
mm
telescope diameter:
14
mm
minimum telescope focusing distance:
3450
mm
telescope magnification:
6
type of optical plummet:
none
compass:
integrated
compass design:
circle
compass diameter:
115
mm
smallest division of the compass scale:
1°
horizontal circle diameter:
200
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:
none
vertical circle:
no
segment of the vertical circle:
yes
segment's range of vertical circle:
180°
vertical circle diameter:
200
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:
100
mm
bubble length of the cross level/level parallel with line of collimation:
42
mm
length of the cross level/level perpendicular with line of collimation:
100
mm
bubble length of the cross level/level perpendicular with line of collimation:
44
mm
leveling vial:
yes
length of leveling vial:
135
mm
bubble length of the leveling vial:
58
mm
striding level:
no
altitude buble:
no
designed for work:
basic work