Pentax ETH-310, ETH-302, ETH-305 instruction manual 4 0SET key

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2.3.4 [0SET] key

1Press the [0SET] key twice in succession to reset the displayed horizontal angle 0°,00’,00”. (Press once, the key buzzer will sound, then press again during the sound.)

2Press the key once more to release.

To prevent operation error, the buzzer sounds for three seconds when the [OSET] key is pressed.

[OSET] is not initiated unless the key is pressed during the buzzer sound.

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Contents Electronic Theodolites Page Distinctive Displays Safety Precautions must be followedPage Contents Contents Storing and environmental conditions PrecautionsBattery GeneralTransportation Inspection, Adjustment and Repair, OverhaulOthers Standard EquipmentUnpacking and Storing Names of Parts Page Confirm the correct work by pressing the power switch Preparation of PowerDisplay Key Operations and DisplayKeyboard Function of each key Power ON/OFF key2 V/% key Page Hold key 4 0SET key Illumination key 5 R/L keyAutomatic Power-off function Remaining battery indicatorOther Functions Special key operations Page Setting of Vertical Angle Setting of correction of vertical angle Setting of 90buzzerSetting of angle measurement Setting of Angle unit Setting of automatic power off functionPreparation for Surveying Setting up the instrumentLeveling with the Circular level Leveling with the Plate level Centering with the optical plummet Eyepiece adjustment Object sighting Horizontal angle measurement right MeasurementHorizontal angle measurement left Vertical angle measurement Inspection Inspection and AdjustmentInstructions on inspection and adjustment Perpendicularity of plate vial to vertical axisAdjustment Perpendicularity of circular vial to vertical axis Inclination of reticule graduations Perpendicularity of line of sight to horizontal axis Difference of the vertical angle Optical plummet Diagonal Eyepiece SB14 Optional AccessoriesVertical Angle Compensation SpecificationsTelescope Angle MeasurementVertical axis Power sourceWater resistant Ambient temperature DimensionsPage Certified