Perhaps most well-known is our Magnehelic gage, which has been an industry standard since its introduction in 1953.
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DWYER:476A-0
SKU: DWYER:476A-0
DWYER:SFI-300-1/4
SKU: DWYER:SFI-300-1/4
DWYER:CDT-2D4F
SKU: DWYER:CDT-2D4F
DWYER:SFI-100-1
SKU: DWYER:SFI-100-1
DWYER:SFI-350-1/2
SKU: DWYER:SFI-350-1/2