The Lyman 55 employs a unique three slide adjustable cavity metering system so you can throw any charge weight and any powder with excellent results. The measure can be mounted in any 7/8 to fourteen threaded stand or press. You can also mount it to most flat surfaces with the built-in c-clamp attached to the back of the measure. We make Sinclair drop tubes of various lengths to fit the Lyman measure (can't use it on a 7/8 to fourteen stand with these drop tubes installed). Use with the Lyman Powder Measure Stand, available separately.
Sinclair, Issue:3B, Page:088