ISO/FDIS 8598-1 http://www.iso.org ISO standards and projects ISO - International Organization for Standardization 240 http://www.iso.org/iso/logo_iso.gif http://www.iso.org ISO/FDIS 8598-1 ISO/FDIS 8598-1 - Optics and optical instruments -- Focimeters -- Part 1: General purpose instruments used for measuring spectacle lenses This document reached stage 50.92 on 2012-11-20 , TC/SC: ISO/TC 172/SC 7, ICS: 11.040.70 Standards under development