Dwyer 1222-M400-w/M U-Tube Manometer (200-0-200mm w.c. using water or mercury
Analog 8 inch WC Manometer (1221-8) with SG Red Gage Oil | InspectUSA.com
DWYER, Flex U-Tube, -36 to 36 in wc, Analog Manometer - 3T305|1211-72 - Grainger
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5.5" U-Tube Radon System Manometer
DWYER, Flex U-Tube, -6 to 6 in wc, Analog Manometer - 3T301|1211-12 - Grainger
Manometer Open U-tube with Nakamura-type Water Pressure Apparatus India, Nigeria, Ethiopia, Egypt, Democratic Republic of the Congo, South Africa, Tanzania, Kenya, Algeria, Uganda, Sudan, Morocco, Ghana, Mozambique, Ivory Coast, Madagascar, Angola ...