A metal screen 75mm dia, with an adjustable iris diaphragm mounted in the centre, giving a maximum aperture of 6mm. The disc is mounted on a 6mm brass rod and the optical centre height is 80mm approx.
There are no reviews yet.
Your email address will not be published. Required fields are marked *
This field is required.
Name *
Email *
Save my name, email, and website in this browser for the next time I comment.
Reviews
There are no reviews yet.