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 10" angle accuracy
Magnification 30 x Effective Aperture 45 mm Angle accuracy 10 " 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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