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Davidson D-639 Tridhedral Prism Also has a D-406A 6 Volt Power Pack Assembly and 2 extra light bulbs No adjustment is needed to set the Model D-639 Trihedral Prism normal to the autocollimator axis. This means faster, easier checking of autocollimator internal and infinity focii. * Quickly determines Infinity focus for autocollimation * Requires no adjustment for off-angle coincident beams * Accurately establishes required coincidence of reticles Overall Dimensions: 4" High x 4" Wide x 2.75" Deep Carrying Case: Ethafoam lined Finished Hardwood (please look at our rules and privacy policy) |
p_franklin@machine--tools.com (Peter Franklin) for additional information. This email is used for forwarding to newsgroup user.
