Profile: Summit Instruments Ltd. specializes in offering pressure gauges and thermometers. Capsule gauges are available 50, 63, 100, and 150 mm dial size. They feature low range pressure and vacuum, and are available in brass/bronze and stainless steel construction. They also feature back flange and panel mounting. Bi-metal thermometers are available in 32, 50, 63, 100, and 250 mm dial sizes. They are glycerin filled, of stainless steel construction, viscous damped, and have electric contacts and telltale pointers.