Catalogue No: 1547
Variable
RECTANGULAR SLIT This slit is used to examine the resolving power of a telescope Stainless steel adjustable slit with unilateral focus movement through micrometer head L.
RECTANGULAR SLIT This slit is used to examine the resolving power of a telescope Stainless steel adjustable slit with unilateral focus movement through micrometer head L.C = .005 mm