Make a chart for your temperature project with this handy swatch chart. Made from sturdy plastic material, write on with a permanent marker (sharpie) & erase with rubbing alcohol. Choose from 3 hole shapes A. Rounded Square Hole B. Round Hole C. Heart shape hole Swatch Chart measures 2" (5cm) wide x 8" (20.4cm) tall Light & the perfect tool for any temperature project! Like us on FB www.facebook.com/aneedlerunsthroughitshop Follow me on Instagram & tag your projects! #aneedlerunsthroughit Temperature Blanket Reusable Color Chart. Erasable Swatch Chart For Temperature Project. Color Chart. Swatch