Just arrived from and assembled by Howard Riehl from new old stock parts, a Synchronar Mark IV.
I just love this watch, took awhile to get a handle on the slide switch combinations but they are intuitive once you get going. Depending on the switch positions; away, toward, jogging the watch will show:
Enjoy:
I just love this watch, took awhile to get a handle on the slide switch combinations but they are intuitive once you get going. Depending on the switch positions; away, toward, jogging the watch will show:
- first time zone; hour, minute, 12 hour display
- second time zone; hour, minute 24 hour display
- day in alpha, seconds
- leap year, correction factor*
- stop watch; hour, minute
- stop watch; second, hundredths
- alarm
- by setting the leap year the watch corrects for Feb,29th until the year 2100.
- the correction factor is used to speed or slow the watch. a count of 46 will adjust the watch 1 second in one day. The range is 000 to 799 for the count. My watch is at 620 and is spot on for 1 week. I have noted the time, date that I set the watch to the WWV atomic clock. In about a month if there is a deviation I can plug the seconds variation and the hours run since setting to calculate a new correction to add to or subtract from the 620 factory setting. Each single increment is 4 seconds per year so with careful measurements the accuracy could theoretically be within 4 seconds a year.
- the stop watch function also has an elapsed time display. While the stop watch is started, (at the beginning of the flight) you can switch to watch mode for the two time zones and every 8 seconds the elapsed time will display for 3 seconds giving you a running count without having to switch to stop watch. This function can be disabled in low light conditions if the stopwatch is required for a long flight.
Enjoy: