Hi Guys:
Here are some photo's , though grainy, of the "scanner" I made for this. Its a piece of wood with a laser pointer pressed in a drilled hole.
The angle of the hole was arbitray, ( my vise was at that angle..) , the plugin calibrates the angle and such with the 2" wooden block in one
of the photos. The laser takes 5 volts, taken from the red and balck wires in the webcam cable. The block of wood is then clamped with a
spring clamp to the upper or lower spindle trunion ring mounts depending on the FOV I want to shoot on.. ( I find higher makes the line sharper
and gives better results.. ) . As you can see, its a very expensive, very sensitive, very complex uint, likely as high as 50 bucks on the open market..
Art