Kearing 18" Pattern Grading Ruler

18” imperial plastic grading ruler, one of the most popular size.
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.
With zero centering scale to measure equally left and right from a centered starting point, a perfect tool for assisting the user to increase or decrease the size of a pattern.