International Organization for Standardization (ISO)
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ISO 9345-1:2012
ISO 9345-1:2012 history
2012ISO 9345-1:2012 Microscopes - Imaging distances related to mechanical reference planes - Part 1: Tube length 160 mm
1996ISO 9345-1:1996 Optics and optical instruments - Microscopes - Imaging distances related to mechanical reference planes - Part 1: Tube length 160 mm