# Material measures of length · Annex X · between two non-consecutive scale marks, a and b as in Table 1 — Accuracy classes and maximum permissible errors for trade measuring instruments

For Material measures of length, annex is Annex X; condition is between two non-consecutive scale marks, a and b as in Table 1; maximum permissible error is (a + bL); scope or member state option is When a terminal interval is bounded by a surface, the MPE for any distance beginning at this point is increased by the value c given in Table 1, recorded from its source on 2026-09-01.

- **Instrument type:** Material measures of length _(verified: appears in its own passage below)_
- **Annex:** Annex X _(verified: appears in its own passage below)_
- **Condition:** between two non-consecutive scale marks, a and b as in Table 1 _(our reading, not quoted from the source)_
- **Maximum permissible error:** (a + bL) _(verified: appears in its own passage below)_
- **Scope or member state option:** When a terminal interval is bounded by a surface, the MPE for any distance beginning at this point is increased by the value c given in Table 1. _(verified: appears in the quote below)_

## What the source says

> The MPE, positive or negative in mm, between two non-consecutive scale marks is (a + bL), where: — | L is the value of the length rounded up to the next whole metre; and | — | a and b are given in Table 1 below. | When a terminal interval is bounded by a surface, the MPE for any distance beginning at this point is increased by the value c given in Table 1. Table 1 Accuracy Class | a (mm) | b | c (mm) | I | 0,1 | 0,1 | 0,1 | II | 0,3 | 0,2 | 0,2 | III | 0,6 | 0,4 | 0,3 | D — | special class for dipping tapes (1) Up to and including 30 m (2) | | 1,5 | zero | zero | S — | special class for tank strapping tapes For each 30 m length when the tape is supported on a flat surface | | 1,5 | zero | zero

## Where each value comes from

This source states these in separate places, so each value is shown with the passage that states it.

### Instrument type

> ANNEX X MATERIAL MEASURES (MI-008) CHAPTER I Material measures of length The relevant essential requirements of Annex I, the specific requirements of this Annex and the conformity assessment procedures listed in this chapter, apply to material measures of length defined below.

### Annex

> ANNEX X MATERIAL MEASURES (MI-008)

### Maximum permissible error

> The MPE, positive or negative in mm, between two non-consecutive scale marks is (a + bL), where: — | L is the value of the length rounded up to the next whole metre; and | — | a and b are given in Table 1 below. | When a terminal interval is bounded by a surface, the MPE for any distance beginning at this point is increased by the value c given in Table 1. Table 1 Accuracy Class | a (mm) | b | c (mm) | I | 0,1 | 0,1 | 0,1 | II | 0,3 | 0,2 | 0,2 | III | 0,6 | 0,4 | 0,3 | D — | special class for dipping tapes (1) Up to and including 30 m (2) | | 1,5 | zero | zero | S — | special class for tank strapping tapes For each 30 m length when the tape is supported on a flat surface | | 1,5 | zero | zero

## Source

- https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32014L0032

Last verified: 2026-09-01. Review by: 2027-09-01.
Part of [Accuracy classes and maximum permissible errors for trade measuring instruments](https://referencesource.org/legal-metrology-accuracy-classes/).