Perhaps most well-known is our Magnehelic gage, which has been an industry standard since its introduction in 1953.
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DWYER:MCS-111050
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DWYER:CLS1
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DWYER:123-153
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DWYER:DA-31-153-8
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DWYER:DS-7231-153-9
SKU: DWYER:DS-7231-153-9