Perhaps most well-known is our Magnehelic gage, which has been an industry standard since its introduction in 1953.
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DWYER:645-5
SKU: DWYER:645-5
DWYER:4050B
SKU: DWYER:4050B
DWYER:4050
SKU: DWYER:4050
DWYER:2060
SKU: DWYER:2060
DWYER:421-5
SKU: DWYER:421-5
DWYER:2001-ASF
SKU: DWYER:2001-ASF