Engine/Measuring tool/650981-650993 TRY SQUARE PRECISION WITH BASE, 2ND-GRADE

中文品名：直角尺，精密底座

Recommended for use where extreme accuracy is required.  Base and blades are hardened, ground and lapped to insure that the square has a straight, parallel setup.  1st and 2nd grades are available according to their tolerance.  Non graduated types are most commonly used but graduated types are also available upon request.  2nd Grade.

推荐用于精度要求极高的场合。底座和刀片经过硬化、研磨和研磨，以确保正方形具有直的、平行的设置。根据他们的容忍度有一年级和二年级可供选择。最常用的是无刻度类型，但也可以根据要求提供刻度类型。