Analog meters are available in a wide variety of styles and sizes.   Analog panel meters are general purpose meters for commercial and industrial applications.  Popular sizes are 2.5", 3.5" & 4.5".  Other sizes also available in both round and rectangular styles. See all brands Analog Panel Meters     Analog switchboard meters are industrial-grade meters that fit standard ANSI panel cutouts. The most popular switchboard sizes are 6" edgewise, 4.25" square and 8.75" square. See Weschler Analog Switchboard Meters See all brands Analog Switchboard Meters Ruggedized versions of switchboard meters are offered for military, marine, nuclear and other high reliability situation.  Call for information on rugged meters.