Q & A Board - View Post
Author:  Yakov
E-mail:  not available
Date:  9/20/2005 5:44:00 PM
Subject:  Hourglass on Shabbat
Message:  Are you allowed to use an hourglass on Shabbat, where you would turn it over and the sand, water or mercury would begin to fall from one glass to the next to measure a specific period of time-usually an hour?
Reply:  no problem

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