PRODUCT INDEX
BRUNSON MODEL 75H PRECISE OPTICAL TRANSIT SQUARE WITH MICROMETER
  • For optical tooling and other applications where maximum precision is required
  • Incredibly robust construction
  • Patented ball bearing mounts permit accurate sweeping of both horizontal and vertical plane
  • Line of sight maintained within +/- .001 inch
  • Optional optical micrometer (#190) installed
  • Special hollow telescope axis and mirror arrangement allow for perpendicular alignment
  • Auto-collimation eyepiece available on request at additional cost.
Having no vertical or horizontal circle, the Brunson 75H Optical Transit Square was designed strictly for precise alignment applications (such as airplane manufacture). Its heavy, all-metal construction is well sealed with only a few moving parts directly exposed to the environment. This particular instrument was used indoors at an aircraft plant. It is in excellent plus cosmetic and operating condition. It is equipped with the optional model 190 micrometer, which is graduated to .001" and allows maximum accuracy to be obtained from the instrument. Also installed is the optional model 194 coincidence (split bubble) vial, providing for even greater accuracy. The bubble vial sensitivity is 20", but a tilt of just 1" can be detected in the vial viewing prism. This unit probably has a "half-life" longer than most of your common radioactive isotopes, and comes with the standard "bomb proof" carrying case (vey good condition) and a photocopy of the owners manual. Call (562-426-1306) or WRITE for price or more info.
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