CKS 137-1971
Punch cards

Standard No.

CKS 137-1971

Release Date

1971

Published By

ZA-SANS

Status

Withdraw

Latest

CKS 137-1971

Scope

Covers punch cards for use with data processing machines. Specifies general requirements, dimensions, basis mass, calliper, bursting strength, stiffnes, internal tearing resistance, smoothness, abrasion loss, ash content, pH value, expansion, contraction

CKS 137-1971 history

• 1971 CKS 137-1971 Punch cards