Dem-Bart vaihtoterä 3, 20 lpi

A left hand spacing tool which has two blades. The right hand blade does not have teeth, instead it is sharp and smooth and will follow a fine guide line. The left hand blade has teeth and cuts the new row as the checkering progresses from the right to the left. Due to the sharp narrow guide blade it is possible to produce very straight rows and consequently exceedingly precise checkering.