CFS2 includes the CFS1 default gauges. These are "cluster" gauges, one library or master gauge containing all special gauges for a particular aircraft. They are generally much larger files than conventional gauges. The default Hurricane cluster gauge is named hurricane_1.gau. There are others named p47d.gau, P51d.gau, spitfire_mki.gau etc. If any default gauges are missing you should be able to retrieve them from the CFS2 CD.

PS. This is how one of these gauges is defined in Panel.cfg. HURRICANE_1!Tachometer. The exclamation mark ( ! ) tells you it's the Tachometer from the HURRICANE_1 (or hurricane_1) cluster gauge.