Chronometer
The navigator's precise timing instrument for checking target and actual times while driving.
The chronometer is a precise timing instrument with which the navigator checks the target and actual times while driving. High-quality devices allow reading to the hundredth of a second and often feature several stop functions.
In certain scoring classes, such as the hourglass class, only mechanical chronometers without a battery are permitted. In open classes, electronic devices and trip computers are also used. A reliable chronometer is part of the basic equipment of every crew.
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Related terms
Roadbook
Each team's handbook: it holds the schedule, the times and the entire route – usually via tulip diagrams and distance figures. The basis of every rally.
Tripmeter
A precise supplementary instrument for measuring the distance driven – more accurate than the standard odometer. The co-driver's key tool, often called a tripmaster.
Regularity rally
Classic-car motorsport where precision counts, not speed: hold prescribed average speeds and target times as exactly as possible.