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This is a pin spanner wrench for eyepiece and objective lock rings on the AN/AVS-6 ANVIS6 night vision goggles. May fit other devices as well. New condition, but may have a few scratches from storage. Part number 5003423 (stamped with CTM part number 6405). Constructed of aluminum alloy with stainless steel pins. Made in USA by CTM.
Please see the dimensions below before buying, to make sure it will fit your device.
One end of the wrench is marked "eye". It has a radius of 0.937", so it will fit a ring that is slightly less than 1.87" diameter.
The other end of the wrench is marked "obj". It has a radius of 0.758", so it will fit a ring that is slightly less 1.52" diameter.
The pins on each end are stainless steel, have a diameter of 0.062", and will fit a 1/16" hole. Overall length is about 6" .