No, it doesn't; it runs out. See for yourself with this hourglass full of iron filings. The steel base has a magnet, so time flies when the glass is on it, and the filings make pretty stalagmites. Stick a magnet on the neck, however, and you can stop time altogether. Glass is 5-1/2 tall on the base and filings run out in about 40 seconds (three trips make a two-minute egg) with the magnet, somewhat longer without it.
Magnetic Sand Timer
Kitchen Timer, Digital Timer for Cooking, Egg Timer, Cute Magnetic Desk Timers for Classroom, Teacher, Toothbrush, Exercise, Oven, Baking, Table,White
Westminster WTM2363 Magnetic Sand Timer, One Size, Clear : Home & Kitchen
PLUSBRAVO Digital Kitchen Timer with Loud Ringer Magnetic Egg Timer with Backing Stand
AstroMedia The Magnetic Egg Timer
PLUSBRAVO Digital Kitchen Timer with Loud Ringer Magnetic Egg Timer with Backing Stand
Zassenhaus Magnetic Retro 60 Minute Kitchen Timer, 2.75-inch, Orange : Target
Mudder 3 Pack 24 Hours Magnetic Kitchen Timers with Digital Alarm Clock Timer, Loud Alarm and Big Screen (Black)
AstroMedia The Magnetic Egg Timer
Kitchen Timer Retro
Simple Timer, Big Help! Many times you end up with overcooked burgers and underdone steak. Now, this countdown timer can tell you when to start or stop accurately! Its loud alarm ensure hearing in another room. Safely watching TV while cooking. 100% useful for kids and teacher to manage the time! 100% Easy To Use! Once remove insulating film, timer standby to work for you! Press both MIN & SEC button to reset to 00:00, then start timing.
Kitchen Timer, [ 2021 Version ] Magnetic Countdown Timer with Loud Alarm, W-10
Magnetic Kitchen Timer : Target
Simple Timer, Big Help!, Many times you end up with overcooked burgers and underdone steak. Now, this countdown timer can tell you when to start or
Kitchen Timer, [ 2021 Version ] Magnetic Countdown Timer with Loud Alarm
AstroMedia Miscellaneous
