Davidson D-600 Comparison Autocollimator, US $499.99 – Picture 0

Davidson D-600 Comparison Autocollimator, US $499.99 – Picture 1

Davidson D-600 Comparison Autocollimator, US $499.99 – Picture 2

Davidson D-600 Comparison Autocollimator

US $499.99

Millstone Township, New Jersey, United States
Jan 29th

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Davidson D-600 Comparison Autocollimator Description Davidson D-600 Comparison Autocollimator Good Condition -- No light source Model D-600 Comparison Autocollimators apply a unique principle of autocollimation to compare and measure small angles with extremely high precision. Specifically, the instrument measures the difference in angle between two reflecting surfaces. A beam of collimated light from the instrument is divided to illuminate a reference mirror and a second mirror whose relative angle is to be determined. The patented design employs a unique arrangement of optical tipping plates coupled to a calibrated micrometer dial, where the relative angle is read when the images are aligned. Differences in angle of the returning beams can be measured with average repeatability of 1/10 arc seconds, either vertically or horizontally. The micrometer dial is graduated in 1/10 arc seconds, with each second numbered. One complete revolution of the dial is equal to 10 arc seconds with a total range of 120 arc seconds. Of utmost importance to precision is the fact that instrument movement during reading will only move the images in the field of view; it will have absolutely no effect on the reading. This fact eliminates the rigid mounting and extreme handling care demanded by other instruments, where any motion is translated directly into the micrometer reading. Payment Payment must be made within 3 days of purchase. Shipping Shipping will be by FEDEX Ground, USPS Priority, or Freight Terms of Sale International Buyers Please Note: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. About Us As one of eBay's top sellers for over 10 years, B.J.V. Enterprises, LLC combs the market nationwide to bring you the best selection of top brand-names in surplus equipment and tooling. -machine shop tools and metalworking equipment -precision inspection equipment -testing and measurement equipment -construction equipment ...and more We are committed to 5-star service. Our goal is to exceed your expectation. If you feel that you have not received 5 star service, please contact us before leaving feedback and we will work with you to ensure satisfaction. Contact Us Please call 973-610-2326 with any questions

Condition	Used : An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections.
Seller Notes	“Good Condition -- No light source”