Seiko V195 Manual - Page 20

English TACHYMETER (for models with tachymeter scale on the dial) To measure the hourly average speed of a vehicle 1 Use the stopwatch to determine how many seconds it takes to go 1 km or 1 mile. 2 Tachymeter scale indicated by the STOPWATCH second hand gives the average speed per hour. Ex. 1 STOPWATCH second hand: 40 seconds Tachymeter scale: "90" "90" (tachymeter scale figure) x 1 (km or mile) = 90 km/h or mph l Tachymeter scale can be used only when the time required is less than 60 seconds. Ex. 2: If the measuring distance is extended to 2 km or miles or shortened to 0.5 km or miles and the STOPWATCH second hand indicates "90" on tachymeter scale: "90" (tachymeter scale figure) x 2 (km or mile) = 180 km/h or mph "90" (tachymeter scale figure) x 0.5 (km or mile) = 45 km/h or mph 40 To measure the hourly rate of operation 1 Use the stopwatch to measure Ex. 1 the time required to complete 1 job. 2 Tachymeter scale indicated by the STOPWATCH second hand gives the average number of jobs accomplished per hour. STOPWATCH second hand: 20 seconds Tachymeter scale: "180" "180" (tachymeter scale figure) x 1 job = 180 jobs/hour Ex. 2: If 15 jobs are completed in 20 seconds: "180" (tachymeter scale figure) x 15 jobs = 2700 jobs/hour 41 English