EN ISO 8503-3:2012

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Test surfaces
7 Procedure for measurement of maximum peak-to-valley
  height
8 Calculation and expression of results
9 Test report
Annex A (normative) - Determination of backlash (play)
        in the microscope adjustment mechanism
Annex B (normative) - Test report for the calibration of
        ISO surface profile comparators and for the
        determination of surface profiles
Annex C (normative) - Form for recording surface profile
        measurements made in accordance with this part of
        ISO 8503
Annex D (informative) - Guidance notes for calibrating ISO
        surface profile comparators using a focusing microscope
Annex E (informative) - Guidance notes for the preparation
        and measurement of replicas
Bibliography

ISO 8503-3:2012 specifies the optical microscope and describes the procedure for calibrating ISO surface profile comparators conforming to the requirements of ISO 8503‑1.It is also applicable to the determination of the surface profile, within the range of 20 μm to 200 μm, of essentially planar blast-cleaned steel. The determination can be carried out on a representative section of the blast-cleaned substrate or, if direct observation of the surface is not feasible, on a replica of the surface.