Parallel shank twist drills for use in jig bushes
Edition 2006-11

Morse taper shank twist drills for use in jig bushes, long series
Edition 2006-11

Drainage - Control of sub-surface water management by draining with pipes and amelioration of the subsoil - Part 1: General principles
Edition 2015-12

Drainage - Control of sub-surface water management by draining with pipes and amelioration of the subsoil - Part 2: Planning and dimensioning
Edition 2015-12

Drainage - Control of sub-surface water management by draining with pipes and amelioration of the subsoil - Part 3: Construction and documentation
Edition 2015-12

Step irons for staggered manhole steps - Part 3: Bolted-on step irons
Edition 2010-04

Step irons with upstand for staggered manhole steps - Part 3: Bolted-on step irons
Edition 2010-04

Transmisson of optical radiation; optical clear (nonscattering) media, quantities, symbols and units
Edition 1972-06

Transmission of optical radiation; turbid media, definitions
Edition 1975-04

Core drills with morse taper shank, long series, for the use in jig bushes
Edition 1981-10