Rugged Series 1200/1300 instruments, switches, and gauge-switch combinations incorporate piston-magnet sensor that responds to changes in pressure. Fabricated from aluminum, Type 316 stainless steel, or naval brass, instruments are rated for 3,000-10,000 psi line pressures and offer selectable differential pressure ranges from 5-1,000 psid. Switches or gauge-switch combinations are available with multiple reed switches and NEMA 4x enclosures.