The 6140 mirrored target is used to check the perpendicularity of a part by autoreflection or autocollimation using the first-surface mirror, as well as to position a part on the line of sight using the target image. The target is unmounted and can be fitted directly into the part to be positioned, or into any standard sphere such as our 521-B.

This product is a replacement for our previous mirrored target which was listed as National Stock Number NSN-6650-01-197-0587.