Over And Under FB (Fat Boy) and SB (Skinny Boy) Scribers

see Tooley Park Tools reviews here

Please note the over and under FB and SB Scribers are suitable for pencils only

Overview of the over and under FB and SB Scribers

The over and under FB and SB Scribers are exactly the same as the normal FB and SB Scribers apart from having 2 mounting positions so the pencil can be held above or below the pivot point. This allows the user to have more control over the angle the pencil is in relation to the work piece. 

Having 2 positions with the over and under scribers means you can set the pencil up closer to parallel over the full opening range of the scribers (particularly useful when using the profile attachment).