One form of card used with this type of recorder is shown in Fig. 16. One card is used for each job on which a man works. It will be noted that the time is recorded in decimals. Instead of the usual 12 hours, the recording wheel is divided into 24─hour periods, or if desired, into 23 hours, automatically eliminating the noon hour. The 23─hour wheel prints 12 at noon and again at one o'clock, 13 at two o'clock, etc. At 3:30 P. M., for instance, the clock would record 14.50, meaning 14½ hours. On the card illustrated, the record shows the job to have been started at 8.08 and finished at 11.40, the elapsed time being 3.32 hours. [Illustration: Fig. 18. The Calculagraph, Manufactured by the Calculagraph Company] A clock of similar type accommodates a sheet of any size, and provides for as many separate time records on the same sheet as may be desired. A sheet may record the time of a single employe for an entire day and show the exact time worked on each job. Or, in some industries, the card may be made for a job and arranged to accumulate the time of all employes working on the job. Fig. 17 shows how several time sheets of this class can be bound together, making a daily time and pay sheet for each employe. From this sheet the time is distributed to the cost sheets. Still another type of time recorder, which offers certain distinct advantages, is shown in Fig. 18. This machine is used to obtain a time record for each employe on each separate job or operation. The distinctive feature of this machine is that it records the elapsed time. When a man commences work on a new job, he places his card in the machine and by moving a lever registers the starting time. When the job is finished, he again places the card in the machine, this time moving a second lever, and registers the exact time that he has worked on the job. The advantage is apparent. With an ordinary time stamp printing the starting and finishing time, it is necessary for a clerk to mentally compute the elapsed time. With this machine the elapsed time is mechanically computed and printed, saving the time of the clerks and doing away with all possibility of clerical errors. [Illustration: THE MECHANICAL DRAFTING DEPARTMENT AT THE PLANT OF THE GREEN FUEL ECONOMIZER COMPANY, MATTEAWAN, N. Y.] Fig. 19 illustrates the form of record made by this machine. The record shows that workman No. 38 commenced work on job No. 530 at 9:45 A. M., that he was employed on this job 2─8/10 hours, and that the operation was milling. [Illustration: Fig. 19. Time Record Made by the Calculagraph] The machine is made to register either hours and minutes, or hours and tenths of hours. For cost─keeping purposes the latter is preferred for the reason that it is much easier to figure time at a given rate in tenths. A form of card, without the record, is shown in Fig. 20. The card can be of any size desired, the only requirement being a blank space for the time record in the upper left─hand corner.