• Your shopping cart is empty!

  • BS 4274-1:1968

BS 4274-1:1968

Visual acuity test types-Specification for test charts for clinically determining distance visual acuity

BSI Group, 01/26/1968

Publisher: BS

File Format: PDF

$76.00$152.40


Published:26/01/1968

Pages:12

File Size:1 file

Note:This product is unavailable in Ukraine, Russia, Belarus

Basic requirements for test charts designed for either internal or external illumination, employing English (Roman) capital letters to determine the distance visual acuity. Provision is also made for the single letter C (Landolt or broken ring) and the single letter E (illiterate E) in various orientations.

All current amendments available at time of purchase are included with the purchase of this document.

More BS standard pdf

BS M 35:1970

BS M 35:1970

Magnetic particle flaw detection of materials and components

$133.00 $266.31

BS 185 INDEX:1970

BS 185 INDEX:1970

Glossary of aeronautical and astronautical terms

$125.00 $251.46

BS 3900-C5:1970

BS 3900-C5:1970

Methods of test for paints. Determination of film thickness

$125.00 $251.46

BS 4627:1970

BS 4627:1970

Glossary of terms relating to types of cements, their properties and components

$127.00 $255.20