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  Series 1230/1235 Flex-Tube® Well-Type Manometer
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  Series 200 & 300 Durablock® Solid Plastic Stationary Gage
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  Series 250-AF Inclined Manometer Air Filter Gage
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  Series 3000MR/3000MRS Photohelic® Switch/Gage
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  Series 424 Durablock® Inclined/Vertical Manometer
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  Series A3000 Photohelic® Pressure Switch/Gage
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  Series AT23000MR/3000MRS ATEX Approved Photohelic® Switch/Gage
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  Series AT2DH3 ATEX Approved DH3 Differential Pressure Controller
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  Series AT3A3000 ATEX Approved Photohelic® Switch/Gages
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  Series DH Digihelic® Differential Pressure Controller
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  Series DH3 Digihelic® Differential Pressure Controller
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  Series DL7 Differential Pressure Data Logger
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  Series Mark II Molded Plastic Manometer
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  Series MP Mini-Photohelic® Differential Pressure Switch/Gage
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  Series RSM Room Status Monitor