I have an attchment for my janome machine which enables me to do measured straight lines. I haven’t used it for years, and so have forgotten how ! ! It consists of a metal bar about 3 inches long with a right angle prong at the end of it, and 12 years ago it was fantastic for quick quilting diamonds or squares. Have you any ideas please of how I used it?
this is an attachment that fits into the back of your walking foot; you need to mark one line to sew along and then use this gadget to the right position/width so that when you place this gadget on the first sewing line your needle will be sewing the appropriate distance away.
If you don’t remember how to fit your walking foot – here is the link
Wendy also have a workshop for us on How to use Your Walking Foot.