NATIONAL MEASUREMENT REGULATIONS 1999 - SCHEDULE 4 Maximum permissible uncertainty--length (State primary and secondary standards)
NATIONAL MEASUREMENT REGULATIONS 1999 - SCHEDULE 4
Maximum permissible uncertainty--length (State primary and secondary standards)(paragraphs 18(5)(a) and 25 (a))
Column 1 | Column 2 | Column 3 |
Denomination | Maximum permissible uncertainty (at 95% level of confidence): State primary standard | Maximum permissible uncertainty (at 95% level of confidence): State secondary standard |
Part 1 Flexible standards | ||
ï£ 10 m | 0.08 mm | 0.15 mm |
> 10 m | 0.001% | 0.002% |
Part 2 Rigid standards | ||
ï£ 1 m | 0.008 mm | 0.015 mm |