Mainly because of the insufficient deviations in precision machining, you can find much less defective productions. So the procedure results in a reduce rejection price of parts. Hence, the price of materials is decreased. Bilateral Tolerances: In this type of tolerance, variation in Proportions is permitted in both directions. https://emilianozaxkb.thekatyblog.com/31908209/top-cnc-milling-machines-for-industry-secrets