These assembly posts keeps the movement plate flat while keeping it off the table. This makes for a workable platform to use during reassembly. The movement will not sit on the table well. Because of the posts and things that stick out of the plates, it won't sit flat. So these posts are the best to clamp to the movement plate and keep it in the air nice and flat.
This way all the wheels can be set in there without leaning this way or that because the movement plate would be off level with out these. Basically without these posts you may just lose your mind trying to reassemble a clock movement, especially when learning.
Set of 4 posts 2 3/4' long have a screw top that will clamp it to the movement plate. Includes a hanging bracket to hang the movement for testing on the wall.