Features: 1. This T-shirt ruler guide is easy to use and comes with a central guide and size chart. Just align the ruler with the collar and center the pattern before ironing. 2. This T-shirt ruler is made of durable transparent acrylic with UV printed graduation marks, which is not only easy to read, but also durable. 3. Tshirt calibration tool is 16x5 inches, portable size, easy to store. Suitable for matching with various sizes of T-shirts. 4. The thickness of this t-shirt ruler is 1/8 inch, which is suitable for most size t-shirts. applicable for Adults39;s, teenagers39; and babies39; T-shirt, but need to move up to the middle when using 5. T-shirt ruler can be used for HTV, heat press, sublimation, screen printing, vinyl press, etc. Notice: 1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow slight deviation due to manual measurement. Specification: Size: 16x5 inches Material: Acrylic Color: transparent Package List: 1/2optional x T-Shirt Alignment Ruler