This handy pen maker's tool has 7 useful functions pen blank center finder, pen tube length Measurer, inch to cm conversion, pen tube sizer, drill bit sizer, square, chisel angle finder
Check O.D. Of your pen tube and drill bit with six of the most used pen turning sizes 7mm, 8mm, 3/8", 10mm, 10.5mm, 12.5mm
Find the center of your square and non-square pen blanks with the cross-hair (square) and Bullseye (non-square) center finders
Chisel angle finder measures four common tool Degree angles 35 (bowl/spindle gouge), 45 (bowl/roughing gouge), 55 (bowl gouge), 75 (scrapper)