Pentax ETH-302, ETH-310, ETH-305 instruction manual Contents

Models: ETH-310 ETH-302 ETH-305

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CONTENTS

• 5.

Measurement

34

5.1Horizontal angle measurement (right)

5.2Horizontal angle measurement (left)

5.3Vertical angle measurement

• 6.

Inspection and Adjustment

37

6.1Instructions on inspection and adjustment

6.2Perpendicularity of plate vial to vertical axis

6.3Perpendicularity of circular vial to vertical axis

6.4Inclination of reticule graduations

6.5Perpendicularity of line of sight to horizontal axis

6.6Difference of the vertical angle

6.7Optical plummet

• 7.

Optional Accessories

44

7.1Diagonal eyepiece

• 8.

Specifications

45

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Pentax ETH-302, ETH-310, ETH-305 instruction manual Contents