This pull scale measures in 2 ounce increments and measures trigger pull weight from 8 ounces to 8 pounds to a +/- 2 ounce accuracy. The Wheeler trigger pull scale is an excellent tool to use when adjusting triggers to ensure accuracy and maintain safe performance. This pull scale measures in 2 ounce increments and measures trigger pull weight from 8 ounces to 8 pounds to a +/- 2 ounce accuracy. Features an ergonomically shaped handle for consistent direction of pull and highly visible increment markings. The easy to read sliding indicator stays on the maximum weight registered for an accurate measurement.