Pentax Mastering Angle Measurements with the ETH-302 Model

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5. Measurement

5.1 Horizontal angle measurement (right)

1Level the instrument, and after power on set the vertical angle 0 point.

2Sight the first object using the horizontal clamp and tangent screw as well as the telescope clamp and tangent screw.

3Press [0SET] twice to set the horizontal angle to 0°,00’,00”

4Sight the second object using the horizontal clamp and tangent screw as well as the telescope clamp and tangent screw.

5Read the displayed value (α).

First Object: Zero Setting (0 °00’ 00”)

Second Object (34 °47’ 20”)

Horizontal Angle (α) = 34 °47’ 20”

First object

Second object

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Contents Electronic Theodolites Page Safety Precautions must be followed Distinctive DisplaysPage Contents Contents General PrecautionsBattery 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 switchDisplay Key Operations and DisplayKeyboard Power ON/OFF key Function of each key2 V/% key Page Hold key 4 0SET key 5 R/L key Illumination keyAutomatic Power-off function Remaining battery indicatorOther 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 Perpendicularity of plate vial to vertical axis Inspection and AdjustmentInstructions on inspection and adjustment 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 SB14Angle Measurement SpecificationsTelescope Vertical Angle CompensationDimensions Power sourceWater resistant Ambient temperature Vertical axisPage Certified