From 1934, when Universal specialized in chronographs, all chronographs adopted the second pusher. This development took place in two stages, the very first versions having two column wheels, then a single one. The minute counter is a 45-minute counter, whereas most other chronographs of the time had a 30-minute counter. The Compur trademark, registered in 1934, is often added to the dial. Multiple scales may appear on the dials: telemeter, tachometer, pulsometer (graduated for 30 pulses).
2.1 The main chronograph models
(the dates of the illustrations are those of the publication years of the documents, and are not necessarily the release dates of the models)
- 1934: Compur model, 2 pushers and 45-minute counter.