Piattezza: la piattezza si riferisce su una singola superficie piana. Flatness: flatness refers to a single plane
| US Inches/pollici | METRIC - Millimeters | ||
| Thickness | Dish per 6 sq. inches | Thickness of surface | Dish per 42 sq. inches of surface |
| up to 0.250" | Insignificant | up to 6.5mm | Insignificant |
| 0.251"-0.500" | 0.004" TIR | 6.5mm - 13mm | 0.102mm TIR |
| 0.500"-1.000 | 0.008" TIR | 6.5mm - 13mm | 0.102mm TIR |
| 0.501"-1.000" | 0.008" TIR | 6.5mm - 13mm | 0.102mm TIR |
Angolarità: La tolleranza angolare può essere controllato +/- 1 ° ~ +/-2 °.
Spessore del pezzo grezzo: Lo spessore del pezzo normale dove la tolleranza deve essere minimo di 0.02 "(0.5mm)".
Rotondità del pezzo grezzo: La variazione diametrale in sezioni arrotondate solide può essere vista nella tavola sotto:
Rectilinear: rectilinear tolerance on an axial piece: +/-0.005² per inch (:tolerance +/- 0.127 mm : by 25 mm) as
casting.
Angularity : the angular tolerance can be controlled +/- 1 ° ~ +/- 2 °
Rough Piece Thickness: the normal piece thickness, where the tolerance is at least of 0.02² (0.5mm)².
Rough Piece Roundness: the diametrical variation in rounded solid sections can be seen in the chart
below:
| US Inches/pollici | METRIC - Millimeters | ||
| Tolerances | Diameter | Tolerances | Diameter |
| up to 1" | 0.006" TIR | up to 25mm | 0.125mm TIR |
| 1" - 1.5" | 0.008" TIR | 25mm - 37.5mm | 0.203mm TIR |
| 1.5" - 2" | 0.010" TIR | 37.5mm - 50mm | 0.254mm TIR |
| 2" - 3" | 0.015" TIR | 50mm - 75mm | 0.381mm TIR |
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