Perhaps most well-known is our Magnehelic gage, which has been an industry standard since its introduction in 1953.
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DWYER:DFMT-50A
SKU: DWYER:DFMT-50A
DWYER:DFMT-40A
SKU: DWYER:DFMT-40A
DWYER:DA-7041-153-22E
SKU: DWYER:DA-7041-153-22E
DWYER:645-4-3V
SKU: DWYER:645-4-3V