NF C93-903-25:1997 Fibre optic interconnecting devices and passive components. Basic test and measurement procedures. Part 3-25 : examinations and measurements. Concentricity of the ferrules and ferrules with fibre installed.
2014NF C93-903-25:2014 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-25 : examinations and measurements - Concentricity of the non-angled ferrules and non-angled ferrules with fibre installed
1997NF C93-903-25:1997 Fibre optic interconnecting devices and passive components. Basic test and measurement procedures. Part 3-25 : examinations and measurements. Concentricity of the ferrules and ferrules with fibre installed.