Davidson Optronics D 656 Autocollimator Two Axis

This item is a used Davidson 2-Axis autocollimator in its original case.
Power pack assembly D-406, and cable are not included and must be sourced separately. The wood case is damaged.

Manufacturer Specifications:
– Accuracy: 0.5 arc seconds over any one arc minute, 3.0 arc seconds cumulative over the entire range of 20 arc minutes
– Sensitivity: 0.1 arc second
– Repeatability: Plus or minus 0.2 arc seconds
– Total measuring range: 20 minutes of arc in elevation and azimuth
– Dual Scale Readout: minutes scale and seconds scale at 0.2 seconds/div.
– Reticle Pattern: Dot with illuminated concentric rings approximately at five minute intervals. No numbers in the field of view � all readouts are taken directly from the filar readout drums.
– Objective Aperture: 2.375�
– Reduced Measuring Range at long distances = plus or minus 10 minutes @ 35 feet, and plus or minus 2 minutes @ 135 feet.

This unit has not been calibrated. Buyer will need to source their own calibration.

BMI Surplus, Inc. has a huge inventory of used, new, pre-owned, recycled and refurbished Metrology Equipment for sale.
We will work with you individually to find the perfect set up for your application.

Buy online or give us a call at 781-871-8868. We have experienced customer service representatives standing by ready to help you!

BMI Surplus, Inc. is a dealer in used and sometimes new Surplus Scientific & Industrial Equipment – we cater to clients in search of items to be used for specific applications.
We do not offer a guarantee as many of our items are purchased by professionals in need of parts and pieces.
You will find many of our items listed on our website as untested or as parts or repair units even though in they are in good used condition.

**Shipping, Handling & Freight fees are dependent on your location.
We will provide a freight quote to meet your individual needs and work with you if you prefer to use your own carrier.
We have 32 years of experience shipping sensitive scientific instruments & industrial equipment!!

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***MPN D 656
***OEM Davidson Optronics
***SKU*** 39241