ANGLING FOR BETTER QUALITY--Measuring bend angles of tubular products

摘要

REGARDLESS of the process used to bend a tube, fabricators are interested in the quality of the bend angle produced. Bend angle quality often is a tolerance surrounding a target angle. Although measuring a bend angle is old hat, a review of some of the various measuring techniques may shed a new light on this important subject. Traditional protractors come in a digital or vernier style (see Figure 1). Named for mathematician Pierre Vernier, the vernier scale has been used for decades and is in use worldwide.