Originally Posted by
Onebyone
That's interesting. When I bought mine it was called Rule Steady and I still have the directions with pictures that show to place it on top of the ruler. It was made in Australia with no US distributor at the time. I love it. I won't use a rotary cutter without it. I have the long and short size.
The Rule Steady and Slidelock are different rulers.
The Rule Steady is indeed designed to be placed on top of rulers; it has two uneven sides, one of which is higher to compensate for the height of the ruler. The Rule Steady has rubber grips under the two sides. Here is a link to a Youtube demo of the Rule Steady:
https://www.youtube.com/watch?v=ZKpqNqK1q80
The Slidelock does not have two uneven sides and was not designed to be used on top of rulers; it is designed to be used as a cutting ruler itself. It has a single row of round "grippers" underneath the handle. The ruler itself has holes in the ruler under the handle. When the handle is pressed, the grippers go through the holes in the ruler to "grip" the fabric. It will not work on top of rulers in the same way that the Rule Steady does; the design is different. Here is a link to a Youtube demo of the Slidelock:
https://www.youtube.com/watch?v=x1hyEDLC4S8