Pentax ETH-310 User Manual
Page 46
46
Vertical axis
Single
Sensitivity of vials
Plate vial
ETH-302
30”/2 mm
ETH-305
30”/2 mm
ETH-310
40”/2 mm
ETH-320
40”/2 mm
Circular vial
8’
Tribrach type
Detachable
Optical plummet
Magnification
3 x
Focusing range
0.5 m to Infinity
Power source
Type
4 x AA dry battery
Operation time (Alkaline)
25 to 28 hrs.
(NiMH2300mAh) 25 to 28 hrs.
Water resistant
IP x4
Ambient temperature
- 10 °C to + 50 °C
Height
215 mm
Dimensions
Instrument (including batteries)
W168 x H330 x L158mm/4.6kg