Belt drives. Grooved pulleys for joined classical V-belts. Groove sections AJ, BJ, CJ and DJ (effective system) Ingestion-build-47786 Why should you use BS

Why should you use BS EN 61935-3 - Home cabling

and so are included here with references to where they were originally defined

BS 6504 on testing water absorbency of paper and board is useful for:

Apparatus and materials

Belt drives. Grooved pulleys for joined classical V-belts. Groove sections AJ, BJ, CJ and DJ (effective system) Ingestion-build-47786 Why should you use BS1 Scope This International Standard specifies the principal characteristics of grooved pulleys (for groove sections AJ, BJ, CJ and DJ), intended to take joined classical V belts for industrial power transmission drives. NOTE 1 The effective width of a groove is regarded as the basic dimension of standardization for grooves and for the corresponding joined V belts considered as a whole. NOTE 2 The pitch line position can only be given approximately.