1. Using one-piece structure processing molding, carbon steel forging, not easy to break, durable 2. Comfortable grip, durable and not tired 3. Chrome-plated surface to avoid reflection, easy to observe 4. Use: Inspection tool vertical straightness, can also be vertical scribing 5. Scope of application: linear cutting, decoration design, precision machine parts, inspection guide, inspection plate, inspection machine tools, etc. 6. Material: carbon steel 7. Size: about 9.9 x 7cm 8. Weight: about 144g