Perhaps most well-known is our Magnehelic gage, which has been an industry standard since its introduction in 1953.
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DWYER:DHII-008
SKU: DWYER:DHII-008
DWYER:202.5
SKU: DWYER:202.5
DWYER:APM-220
SKU: DWYER:APM-220
DWYER:PI-1
SKU: DWYER:PI-1