Black Seam Allowance Guide Magnet
Black Seam Allowance Guide Magnet  Ref: SAGM-BLACK
This useful tool attaches magnetically to your sewing machine's needle throat plate insuring uniform seam width and as a guide to straight stitching.
Lightweight rust-free plastic construction.
Size: approx: 40 x 20 x 8 mm

NOT recommended for computerised sewing machines.