Smiths Dash Clock Used By Aviation Pioneer Jean Batten
A Smiths dash clock, once owned by New Zealand aviation pioneer Jean Batten, is highlighted at the Museum of Transport and Technology (MOTAT) in Auckland. This compact instrument was crucial for Batten's record-breaking solo flights, aiding in navigation, timing fuel stops, and monitoring engine intervals.
The Smiths dash clock features a navigational dial with large Arabic numerals, a railroad-style 60-minute track, and a sub-dial at 6 o'clock segmented into 10, 20, 30, 40, and 60-second intervals.
Its worn casing, faded numerals, and small dents attest to its extensive use during critical flight moments.
The clock was essential for Jean Batten's navigation, which relied on timekeeping, celestial observations, compass readings, and drift tables due to the lack of advanced navigation systems.
Instruments like this dash clock were vital for calculating position over oceans and wilderness, managing fuel consumption, and monitoring engine performance.
The clock's accuracy was critical, as even a minute's error could result in being miles off course during long-distance flights.
The dash clock is part of a collection at MOTAT that includes Batten's flying cap, logbooks, and engine parts.