The Number Of Revolutions And The Rise Of Temperature Were Recorded On A Chronograph Drum.
There is only an one hour chronograph elapsed timer.
These were a perpetual calendar and chronograph with split seconds.
From the so-called chronograph of the year 354 (Catalogue Liberianus) we learn that on the 13th of August, probably in 236, the bodies of the exiles were interred in Rome and that of Hippolytus in the cemetery on the Via Tiburtina.
Abandoning therefore all a priori theoretical assumption, Bashforth set to work to measure experimentally the velocity of shot and the resistance of the air by means of equidistant electric screens furnished with vertical threads or wire, and by a chronograph which measured the instants of time at which the screens were cut by a shot flying nearly horizontally.