Despite the several advantages of precision machining, companies needs to be careful when specifying close tolerances. Bilateral Tolerances: In this type of tolerance, variation in Proportions is permitted in each directions. It can be acknowledged with the tolerance limit for being both over or below the supposed dimensions. From https://cncmachineexporters80112.blog-ezine.com/33081675/the-fact-about-kovosvit-mas-multi-functional-machines-that-no-one-is-suggesting