Pentax ETH-302, ETH-310, ETH-305 instruction manual Vertical angle measurement

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5.3 Vertical angle measurement

Level the instrument, turn the power on and set the vertical angle 0 point.

Sight the object A using the horizontal clamp and tangent screws as well as the telescope clamp and tangent screws.

Read the displayed value ( ).

•The vertical angle mode can be changed to slope percent display (V%) by pressing [V%] key.

Also, horizontal 0°(VH) and compass (Vc) can be set using special key operation.

(Factory setting is Zenith 0°)

(Refer to 3.1 Setting of vertical angle)

Vertical angle (θ) = 86 °24’ 40”

Press the [V/%] key to view the Vv and V%.

Vertical angle 0 point

Object

Horizontal angle

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Contents Electronic Theodolites Page Safety Precautions must be followed Distinctive DisplaysPage Contents Contents Precautions BatteryGeneral Storing and environmental conditionsInspection, Adjustment and Repair, Overhaul TransportationStandard Equipment OthersUnpacking and Storing Names of Parts Page Preparation of Power Confirm the correct work by pressing the power switchKey Operations and Display DisplayKeyboard Power ON/OFF key Function of each key2 V/% key Page Hold key 4 0SET key 5 R/L key Illumination keyRemaining battery indicator Automatic Power-off functionOther Functions Special key operations Page Setting of Vertical Angle Setting of 90buzzer Setting of correction of vertical angleSetting of angle measurement Setting of automatic power off function Setting of Angle unitSetting up the instrument Preparation for SurveyingLeveling with the Circular level Leveling with the Plate level Centering with the optical plummet Eyepiece adjustment Object sighting Measurement Horizontal angle measurement rightHorizontal angle measurement left Vertical angle measurement Inspection and Adjustment Instructions on inspection and adjustmentPerpendicularity of plate vial to vertical axis InspectionAdjustment 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 Optional Accessories Diagonal Eyepiece SB14Specifications TelescopeAngle Measurement Vertical Angle CompensationPower source Water resistant Ambient temperatureDimensions Vertical axisPage Certified