A pivotable folding utility table includes a table top having a pair of support pedestals pivotally attached thereto. The critical flow nozzle and the flow verification process are configured to maintain the flow rate of the fluid through the nozzle at the critical flow condition such that the flow rate through the nozzle is substantially constant and substantially insensitive to any variation in pressure within the chamber downstream of the nozzle. Additionally, various announcements, suitable to certain situations can be provided, or a normal call service can be provided to the subscriber. The method additionally includes restricting a time for installation of the patch according to events scheduled in the calendar of the identified end user. The sizer preferably has a length of between about 19 mm to 22 mm, and the edges are desirably rounded to a minimum 1 mm radius.