This Foxboro Type 37 Diaphragm Meter is a reliable tool for measuring differential pressure. It is designed for use in various industries and comes in different ranges such as low, medium, and high pressure. With its H20 style D, it is easy to install and use. The transmitter is also equipped with several features that make it stand out from other types of meters. Purchase this Foxboro Type 37 Diaphragm Meter and enjoy its accurate pressure readings and long-lasting durability. THE RANGE SPRING DETERMINES THE RANGE OF THIS TRANSMITTER. EITHER 0-50, 0-100 OR 0-200 "H2O.  THESE ARE BRAND NEW IN THE ORIGINAL FOXBORO SHIPPING BOX. AND ARE 316 SS WETTED PARTS.  BASICALLY ALL ONE NEEDS IS THE RANGE SPRING, THE 2 COVERS(FLANGES), AND 8 NUTS. ALL HAVE BEEN BENCH TESTED AND ARE WORKING ACCORDING THE FACTORY SPECIFICATIONS.  PRICE IS FOR 1 EACH. WE HAVE 4 IN STOCK.