Marking Hole: Each 1/16in, 1/32in, and 1/64in scale position has fine marking holes. Draw exactly the straight line distance you want. Complete the details perfectly. Clear Identifiable Scale: T ruler finish with low glare and protective powder coating. It has permanent deep markings and a maximum readability scale. Gives you higher accuracy, clearer proportions, and better line drawing. Good Performance: This T rule perfectly draws the lines where you want them, which is perfect for carpentry and will be a good helper for you. Perfect solution to the problem meets the needs of use. Strong Compatiblity: Simultaneously set to each scale position for perfect and accuracy. Measuring tools are suitable for carpenters, designers, , engineers, etc., suitable for carpentry, decoration, etc. Strong and Durable: T square is made of high quality stainless steel 304, safe and reliable, and will not be deformed, being a good measuring tool, easy to use.