Established in 1969, SPAN's founder Leo Whitson began making the first American made liquid filled gauges in Plano, Texas for the "Oil Patch" industry. SPAN Instruments also pioneered the use of liquid filled pressure gauges in the fire truck industry in the 1980's. The SPAN gauge became the "standard" of the industry and was used by most fire manufacturers through-out the country...
Complete range of trusted and economical SPAN process and subsea pressure gauges