DATEBOOK PICK Inside a mechanical watch or clock, there’s a device called an escapement that makes the tick-tick sound and governs each brief “escape” of gears by a fixed interval. “Escapement”: Tether Dance Project. 7 p.m. Friday-Saturday, July 10-11; 3 p.m. Sunday, July 12. $25-$50. Joe Goode Annex, 401 Alabama St., S.F. www.tetherdanceproject.org In Tether Dance Project’s “Escapement,” by contrast, time doesn’t just inch forward.