Pentax ETH-320 20” Electronic Theodolite
Reliable and accurate angle measurement results are assured with all Pentax Electronic Theodolites as they benefit from simple operating functions and a large clear display.
As ETH-302 but with 20" angle accuracy
Magnification 30 x
Effective Aperture 45 mm
Angle accuracy 20 "
Field of view at 100m 1° 30'
Circular vial sensitivity 8' / 2mm
Display Dual
Instrument weight 4.60 kg
Minimum focus distance 1.35 m
O/P focusing range 0.5m - infintiy
O/P magnification 3
Operation time 30 hours
Plate vial sensitivity 30" / 2mm "
Power source 4x AA Batteries
Resolving Power 3 "
Stadia constant 0
Stadia ratio 100
Tribrach type Detachable
Vertical axis Single
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