# Hydrogen gas as a vehicle fuel · 7.0 · 3.39. Hydrogen Gas-Measuring Devices — How far off a US fuel pump, LPG meter or EV charger is allowed to be (NIST Handbook 44)

For Hydrogen gas as a vehicle fuel · 7.0 · 3.39. Hydrogen Gas-Measuring Devices, device or commodity is Hydrogen gas as a vehicle fuel; accuracy class is 7.0; acceptance tolerance (new or newly repaired device) is 5.0 %; maintenance tolerance (device already in service) is 7.0 %; handbook 44 section is 3.39. Hydrogen Gas-Measuring Devices, verified against its source on 2026-08-20.

- **Device or commodity:** Hydrogen gas as a vehicle fuel _(verified: appears in the quote below)_
- **Accuracy class:** 7.0 _(verified: appears in the quote below)_
- **Acceptance tolerance (new or newly repaired device):** 5.0 % _(verified: appears in the quote below)_
- **Maintenance tolerance (device already in service):** 7.0 % _(verified: appears in the quote below)_
- **Handbook 44 section:** 3.39. Hydrogen Gas-Measuring Devices _(verified: appears in the quote below)_
- **Edition:** 2026 _(verified: appears in the quote below)_

## What the source says

> 7.0 Hydrogen gas as a vehicle fuel 5.0 % 7.0 %

## Source

- https://www.nist.gov/document/2026-nist-handbook-44-section-339

Last verified: 2026-08-20. Review by: 2027-08-20.
Part of [How far off a US fuel pump, LPG meter or EV charger is allowed to be (NIST Handbook 44)](https://referencesource.org/motor-fuel-dispenser-measurement-tolerances-nist/).