Stainless steel low pressure gage, range -100-0" w.c. (-2500-0 mm). The Series SGX/SGF Gages have dual English/metric scales with ±1.6% full scale accuracy. The Series SGX/SGF gages are designed with 304 SS housings and brass or 316 SS wetted parts. Units can withstand ambient temperatures up to 149°F (65°C) and process temperatures up to 212°F (100°C)