Special Features GOST - R GOST Application Specifications IBR IBR CE UL Mark < < < < < < External zero adjustment (optional) Stainless steel case & measuring system Socket directly welded to case Dry and liquid filled version Standard followed EN 837-1 (for NS 100, 150 & 250 mm) CE marking (as per PED 97/23/EC) (for NS 100 mm & 150 mm)