39-GP-31a

Granite Surface Plates

This standard applies to surface plates of igneous rock (granite) for use in precision locating, layout and inspection work. It encompasses new certification, recertification in the field and recertification after resurfacing.

OEN:

ONGC

Langue:

English

Code(s) de l'ICS:

17.040.30

Statut:

Annulée

Date de Publication:

1993-02-27

Numéro Standard:

39-GP-31a