Perhaps most well-known is our Magnehelic gage, which has been an industry standard since its introduction in 1953.
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DWYER:478A-1
SKU: DWYER:478A-1
DWYER:1221-12-W/M
SKU: DWYER:1221-12-W/M
DWYER:TAC-L
SKU: DWYER:TAC-L
DWYER:A1VS-14
SKU: DWYER:A1VS-14
DWYER:CLS2-W11RK1-006
SKU: DWYER:CLS2-W11RK1-006