It is a Plastic Triangle ruler. With 1:4 scale line on, this ruler has been sandwich printed between two pieces of plastic so that the numbers do not rub off. A transparent ruler allows you to see your project under the ruler for accurate positioning and marking. helpful ruler!
Scale Rulers, Sewing Rulers
Shenkir 1:4 Plastic Triangle Ruler #TSR14
1:4 scale ruler
1.2mm thickness with transparent color
Sandwich line printing with plastic material
