I have a Scor-It, and liked the sturdiness of it , but had difficulty getting cards to score evenly because there was only one ruler on the top. I had to use a 90 degree drafting template to insure the lines were straight. That system was a nuisance and I bought a Scor-Pal
Well, now Scor-It has a sliding ruler that attaches to the base! I got it today and it is great. It has inches on one side and metric on the other side. It is heavy metal and just slides onto the base. I can precisely line up a piece of paper .
. The increments are in 1/16" .
Barbara