Cambo 05 Rail/tripod attachment with 3/8 tripod hole with ¼” adapter for the tripod screw.
$12.00 + postage
Cambo 06 18¼” sq rail. The spring pin at the ends is missing so I put a screw to prevent the lens standard from accidently coming off the rail. The two 29½ inch rails that are pictured have been sold
$20.00 + postage