The TPK Scriber is designed to hold the Pica and Tracer deep hole pencils. The aluminium cradle is the same as the FB Scriber with a base size of 64mm x 25.4mm. Due to the pencils length the TPK Scriber doesn’t open quite as wide as the FB and SB Scribers with a shortened pencil.
The pencil holder is delrin.
The front cap head screw acts as a counter balance to the thumb screw tightening knob. This can be adjusted to suit the 2 different pencils (which have very slightly different shank sizes).
When purchasing the TPK Scriber you will need to specify which pencil you wish to use. The tracer pencil is 0.05mm wider in diameter than the pica pencil so the hole needs to be slightly enlarged to suit.