Sight Reduction Tables

Star astimatizing lens

Star astimatizing lens

Deviation

Information about compass deviation

The vernier

How to read the vernier
Tags: Sextant, Nonius
Construction of a spherical compass
Tags: Kompass, Compass

Schüler double prism

Schüler double prism
Combined dip and index error adjustment

Sextant mirrors

Sextant mirrors

Service & Repair

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