How many timers do you have in your aircraft? With installed timers and clocks, portable devices, watches and that old instrument training timer living in the bottom of your flight bag, you likely several more than you might realize. Not all of them are convenient or necessary, but itís interesting to note that in this age of satellite navigation, moving maps and data pages, timers remain ubiquitous. The sweet spot for good utility is probably three: One for flight time, one for fuel tanks or other procedures, and one for approach procedures. Some timing devices allow you to monitor all three together. Whatever your preference, you have choices.