Question about Seco Tribrach Adjuster
The 4 adjustment screws hold the reticule lens in place. Two screws (on opposite end) control left to right and up and down.
A special jig is used by the technician to mount the tribrac so the plummet faces up, and spins on an axis with leveling screws. A fixed point is established and centered on, by moving the foot screws to tilt the tribrac. Then the tribrac is rotated 180 degrees and the fixed point is observed again. If the reticule is no longer on the point then half the error is taken out using the 4 adjustment screws and the other half is taken out using the foot screws on the jig. This step is repeated until the tribrac can be rotated 360 and not move off the fixed point.
Posted on Nov 26, 2014
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Posted on Jan 02, 2017
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