Pentax ETH-302, ETH-310, ETH-305 instruction manual Object sighting

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4.6 Object sighting

After [4.5 Eyepiece adjustment] is completed, sight the object.

1Loosen the telescope clamp screw and horizontal clamp screw.

2Point the telescope at the object using the collimator sight.

3Tighten the telescope clamp screw and horizontal clamp screw.

4Focus on the object by rotating the focusing ring, while looking through the telescope.

5Accurately align the reticule with the object, using each tangent screw.

 

Collimator

 

Focusing ring

object

Telescope eyepiece

 

Horizontal clamp screw

 

Horizontal tangent screw

In procedure 4 , focus on the object correctly so that the reticule will not move in relationship to the object when you move your eye slightly left and right, while looking through the eyepiece.

Turn the focusing ring clockwise to focus on a near object.

Turn the focusing ring counterclockwise to focus on a far object.

Two screws of the collimator are fixed and adjusted at the distributor or the manufacturer. Do not move them arbitrarily.

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Contents Electronic Theodolites Page Distinctive Displays Safety Precautions must be followedPage Contents Contents Battery PrecautionsGeneral Storing and environmental conditionsTransportation Inspection, Adjustment and Repair, OverhaulOthers Standard EquipmentUnpacking and Storing Names of Parts Page Confirm the correct work by pressing the power switch Preparation of PowerKey Operations and Display DisplayKeyboard Function of each key Power ON/OFF key2 V/% key Page Hold key 4 0SET key Illumination key 5 R/L keyRemaining battery indicator Automatic Power-off functionOther 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 Instructions on inspection and adjustment 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 Diagonal Eyepiece SB14 Optional AccessoriesTelescope SpecificationsAngle Measurement Vertical Angle CompensationWater resistant Ambient temperature Power sourceDimensions Vertical axisPage Certified