How to Repair a Lensatic Compass
Alexis Barrios and 3 other contributors
Last updated on Mar 7, 2024
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Introduction
Go to step 1 ↓After extensive use, a Model 3H Cammenga Lensatic Compass tends to give less accurate headings because burrs develop on the needle preventing the dial from rotating. This guide will help you fix this issue in order to maximize accuracy of the compass. Step 7 requires you to use a pocket knife and any sharp tool should be handled with caution.
What you need
Tools
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Using a Phillips #1 screwdriver, remove the four screws in the bottom of the compass.
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Use the pocket knife or any flat edge to pop the bottom plate out of the compass.
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Take out the dial break which should look like a small piece of plastic.
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Tool used on this step:Microfiber Cleaning Cloths$3.99
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Clean the inside of the outer compass with a microfiber towel.
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Take out the floating dial. Just flip the inner compass over.
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Use a pencil and put some graphite on the inside of the center of the floating dial.
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Put the inner lens back on the inner compass.
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Use your thumbs to pull the rubber flush against the inner lens.
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Be sure to line up the black line of the inner lens with what would be the top of the outer compass.
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Put the inner compass back inside the outer piece.
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Make sure that the black line lines up with the top of the compass.
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Put the dial break, the small plastic piece, back on.
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Team
Embry-Riddle Aeronautical University, Team S10-G1, Salas Spring 2020 Member of Embry-Riddle Aeronautical University, Team S10-G1, Salas Spring 2020
ERAU-SALAS-S20S10G1
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