BS 3190:1972

Co-operating organizations
Foreword
Specification
1 Scope
2 Definitions
3 Speedometer drives
4 Drive input for speedometers and odometers (distance
    indicators)
5 Accuracy of odometer
6 Accuracy of speed indication
7 Cases or other protection
8 Installation
9 Mounting and overall dimensions (only applicable to
    heavy commercial vehicles)
10 Parallax
11 Dial presentation
12 Rotation and deflection
13 Insulation resistance (only applicable to heavy
    commercial vehicles)
14 Temperature and humidity
15 Index stability
16 Identification marking
17 Type tests
18 Routing tests
Appendices
A Selection of equipment
B Recommendations on the design and construction of
    speedometers and odometers
Tables
1 Drives
2 Drive input
3 Effect of non-standard input on 620 rev per
    indicated kilometre instrument
4 Effect of non-standard input on 1000 rev per
    indicated mile instrument
5 Accuracy of speed indication of instrument as
    manufactured
Figures
1 Drive A. Regular
2 Drive B. Snap on (typical representation only)
3 Drive C. Light flexible (non-preferred)
4 Drive D. Heavy flexible metric
5 Drive E. Heavy flexible (applicable to mechanical
    and electrical types)
6 Drive F. For electrical transmitter (flanged)
7 Drive G. For electrical transmitter (snout mounted)
8 Drive H. Pulse generator
9 Socket for connection to electronic speedometers for
    Drive H
10 148 mm speedometer (mechanical)
11 Electronic speedometer (clamp fixing)
12 Electronic speedometer (bracket mounted)
13 100 mm/4 in nominal diameter speedometer
    (electrical)
14 Transmitter for speedometers