BS 3693:1992

Committees responsible
Foreword
Recommendations
1 Scope
2 Definitions
3 Factors influencing scale design
4 Determination of scale length and reading distance
5 Basic scales
6 Method of design of scales
7 Index
8 Proportions of scale marks
9 Parallax
10 Other considerations
11 Form of digits
Tables
1 Examples of scale lengths for reading at distances
    300 mm and 1000 mm
2 Direction of movement of the index for increasing
    magnitude of the measurand
3 Dimensions of scale marks expressed as a ratio of
    scale length
4 Examples of character heights for reading at
    distances of 300 mm, 600 mm and 1000 mm
Figures
1 Nomenclature for dials and scales
2 Relations between reading distance and scale length
    with respect to resolution factor
3 Examples of recommended scale marks
4 Recommended shapes of pointer tip
5 Illustrations of types of scales
6 Effect of parallax
7 Measuring range 8 A to 50 A, the subdivisions being
    omitted outside the measuring range
8 Measuring range 80 V to 110 V, the measuring range
    between the dots
9 Measuring ranges 0.06 MOhm to 0.4 MOhm and 0.1 MOhm
    to 2 MOhm, the scale mark bases of the measuring
    ranges being thickened