Review of photoresist based lens evaluation methods

A register device for insertion into a channel of a printing unit cylinder. The device includes a rod defining an axial direction and a pin support movable in the axial direction by the rod, the rod being movable with respect to the pin support in a direction perpendicular to the axial direction. A register pin is attached to the pin support. Also provided is a register device with a pin support, a register pin and shims for altering the position of the register pin on the pin support.