Special ruler for checking deviation of capacitor sleeper nail holes

• Main Authors: DAI ZHAOJIE, DU XIN, CAO FENGJIE, ZHOU ZHAOCHUN, CHEN YINGMING, ZHANG RUIXIAN
• Format: Patent
• Language: Chinese; English
• Published: 25.06.2014
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The utility model relates to a special ruler for checking the deviation of capacitor sleeper nail holes, which is made of a square PC board, wherein the square PC board is engraved with a wiring trough angle reference line corresponding to a wiring trough in a capacitor sleeper and ten groups of nail hole graduation lines corresponding to the nail holes in the capacitor sleeper, each group of the nail hole graduation lines is composed of a nail hole position graduation line, a nail hole position deviation range graduation line and a nail hole position out-of-tolerance warning graduation line, the nail hole position graduation line is a circle with the diameter being 8mm, the nail hole position deviation range graduation line is a circle with the diameter being 10mm, the nail hole position out-of-tolerance warning graduation line is a circle with the diameter being 12mm, and centers of the three circles of each group of nail hole graduation lines are overlapped. The ruler provided by the utility model makes fu