ALLOWS 3 LENGTHS TO BE CHECKED, 1.650, 1.750 AND 1.850. OVERALL THICKNESS IS. 125". THE PICTURES SHOW A FEW ROCKERS AS A SAMPLE ON HOW TO USE THE TOOL (ROCKERS PICTURED NOT INCLUDED). WE 3D PRINTED THESE IN HOUSE AND HAVE USED THEM FOR A WHILE TO CHECK ROCKERS WE HAVE AVAILABLE.
