Proportional Scale


Proportional Scale

  • used to calculate enlargements or reductions from 10% to 1000% from 1” to 100”

  • made of tough plastic

  • large and easy to read markings

  • can be used for a variety of applications from quilts to photo enlargements, artwork , layouts, architectural designs

  • how it works: you have two round rulers and a window, the inside circle is what your dimensions are  , the outside circle is what you want the dimension to be, then look at the window and it tells you the size of the increase or decrease

  • the calibrations for fractions smaller than 1” are printed in Blue