A fixture is disclosed which can reliably attach an attachment member, such as a cylinder, to an attachment site, such as a frame. A heater is provided on the outer periphery of the upper part of the treatment chamber, and a cooler is provided on the outer periphery of the cooling chamber. One of the pluralities of pocket assemblies is adapted for removably coupling to the belt of the user. The aggregator device produces a connection table that maps each node on the network to a record that stores information about traffic to or from the node. The at least one detent is received in the at least one recess.