Breitling “Chronoslide”

Swiss Watch Fair 1971 BF 202
Designed specially for industrial uses, but also suitable for sports timekeeping, this is the first timer equipped with a circular slide-rule. It includes a scale from O to 60 seconds with 1/5th second divisions, a 30-minute counter, a decimal scale, a UPH (units per hour) scale and two logarithmic scales. This model can be used for “snapback” readings and instant re-start, a feature engineers will appreciate when timing industrial operations. (BREITLING “Chronoslide”)