مسطرة مستطيلة بحافة قابلة للإزالة

I was skeptical about the lip at first, but it really locks the ruler in place on the mat while I cut straight lines. Once I figured out how to snap the channel off for repositioning, it became even more versatile.

The removable lip is genius—snap it off when I need full access to the ruler, snap it back on to lock it against the mat. My cuts have been perfectly straight since I switched to this thing.

I was pleasantly surprised by how well the removable lip stays put during cuts, yet pops off instantly when I need to reposition it. It's made my quilting projects noticeably more precise.