Document ID: chunk:federal_register_of_legislation:F2024C00148:reg:12:p21
Version: federal_register_of_legislation:F2024C00148
Segment Type: reg
Provision Reference: reg 12 (pt 21/24)
Character Range: 286367–289503

months, per approval number, per type of deflection system, per base configuration.
3.2.2. Results:
 All results shall be recorded.
 The provisions of paragraph 8.4. of this Regulation shall be complied with.
3.3. Selection of samples
 The selection of samples to be tested shall take account of the quantity produced for each type of rear‑view mirrors

APPENDIX C

Alternative procedure for determining the radius of curvature "r"
of the reflecting surface of a mirror[16]

       1.1.                           Measurement

       1.1.1.                    Equipment

       1.1.1.1                              A 3-point linear spherometer having two outer fixed legs 38 mm apart and one inner movable leg at the mid-point shall be used.

       1.1.2.                    Measuring points

       1.1.2.1                The radius of curvature shall be measured at the 10 test positions shown in Figure 1 of this Appendix below.

Figure 1: Location of ten convex mirror testing positions

       1.1.2.2                The 10 test positions on the image display shall consist of 2 positions at right angles to each other at each of five locations as shown in Figure 1 of this Appendix above.

       1.1.2.3                The locations shall be at the centre of the mirror, at the left and right ends of a horizontal line that bisects the mirror, and at the top and bottom ends of a vertical line that bisects the mirror.

       1.1.2.4                None of the readings shall be within a 6.4 mm border on the edge of the image display.

       1.2.                           Calculation of the average radius of curvature

       1.2.1.                    The average radius of curvature is calculated by adding all 10 radius of curvature measurements obtained for the test positions defined in clauses 1.1.2 to 1.1.2.4 above, and dividing by 10.

ENDNOTES

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Endnote 1—About the endnotes
Endnote 2—Abbreviation key
Endnote 3—Legislation history
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Abbreviation key—Endnote 2
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Legislation history and amendment history—Endnotes 3 and 4
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The legislation history in endnote 3 provides information about each law that has amended (or will amend) the compiled law. The information includes commencement details for amending laws and details of any application, saving or transitional provisions that are not included in this compilation.

The amendment history in endnote 4 provides information about amendments at the provision (generally section or equivalent) level. It also includes information about any provision of the compiled law that has been repealed in accordance with a provision of the law.

Misdescribed amendments
A misdescribed amendment is an amendment that does not accurately describe how an amendment is to be made. If, despite the misdescription, the amendment