Only certain straight stitch machines can be set up with a stitch regulator and only with a table.
Bernina is the only machine that has a stitch regulator.
Brother 1500s, Janome 1600, Juki and one Elna that you can hook up a regulator to but you still need the table. I am getting the Baby Lock Jane and a table. The regulators are $499 for all of them.