Specifications - David White DWT-10 Instruction Manual

9. SPECIFICATIONS

TELESCOPE
ELECTRONIC
ANGLE
MEASUREMENT
ILLUMINATION
OPTICAL PLUMMET
LEVEL VIAL
SENSITIVITY
DISPLAY
OPERATING RANGE
** Standard deviation based on DIN18723.
Overall Length
Objective aperture
Magnification
Image
Field of view
Resolving power
Minimum focus
Stadia Ratio
Stadia constant
Method
Minimum reading
Accuracy**
Diameter of circle
Magnification
Field of view
Focusing range
Plate vial
Circular vial
Operating voltage
required
Operating time
(Alkaline batteries)
Operating
Temperature range
SIZE
WEIGHT
155mm (6.1")
45mm (1.77")
30X
Erect
1° 30'
2.5"
1.3M (53")
100 to 1
0
Incremental
5"/10" (3/5 mog)
10" (6mog)
82mm (3.22")
Display & Reticle
3X
5°
0.5 M to infinity
(20" to infinity)
30" per 2mm
8' per 2mm
4-6 VDC
(4) AA Batteries
15 hrs continuous use
@ 20°C (68°F)
-20° to +50°C
(-4° to +122°F)
145x200x300mm
4.4 Kg inst only
6.8 Kg w/case
17