dwyer
We offer over 8000+ total Dwyer products, including accessories, air velocity transmitters, bin vibrators, CO2/Temp (Duct) sensors, and more. Shop now!
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![Dwyer 1221-M400-W/M U-tube manometer | range 200-0-200 mm w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_561cf618-96fb-4f52-a83c-62d9ad381b16_medium.gif?v=1719997552)
1221-M400-W / M | U-tube manometer | range 200-0-200 mm w.c. | Dwyer
Brand: Dwyer
SKU: 1221-M400-W/M
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![Dwyer 1221-M300-D U-tube manometer | range 150-0-150 mm w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_47ca8352-8a3c-43ce-b52c-3d17def8a46d_medium.gif?v=1719997586)
1221-M300-D | U-tube manometer | range 150-0-150 mm w.c. | Dwyer
Brand: Dwyer
SKU: 1221-M300-D
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![Dwyer 1221-M300-W/M U-tube manometer | range 150-0-150 mm w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_508c63b7-0242-499d-b37a-6a07642c1565_medium.gif?v=1719997547)
1221-M300-W / M | U-tube manometer | range 150-0-150 mm w.c. | Dwyer
Brand: Dwyer
SKU: 1221-M300-W/M
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![Dwyer 1221-M200-W/M U-tube manometer | range 100-0-100 mm w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_00496c95-a5fd-4eb9-afab-5bd63b063bee_medium.gif?v=1719997537)
1221-M200-W / M | U-tube manometer | range 100-0-100 mm w.c. | Dwyer
Brand: Dwyer
SKU: 1221-M200-W/M
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![Dwyer 1221-M400-D U-tube manometer | range 200-0-200 mm w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_d4bb1c33-fc91-462b-a313-7ba1520c065f_medium.gif?v=1719997547)
1221-M400-D | U-tube manometer | range 200-0-200 mm w.c. | Dwyer
Brand: Dwyer
SKU: 1221-M400-D
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![Dwyer 1221-M1000-D U-tube manometer | range 500-0-500 mm w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_3cb84c1c-ea80-4469-812e-e7d042cacb6e_medium.gif?v=1719997520)
1221-M1000-D | U-tube manometer | range 500-0-500 mm w.c. | Dwyer
Brand: Dwyer
SKU: 1221-M1000-D
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![Dwyer 1221-M200-D U-tube manometer | range 100-0-100 mm w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_4b0cee58-e3f8-4cff-b5e3-0d4cbba3453c_medium.gif?v=1719997536)
1221-M200-D | U-tube manometer | range 100-0-100 mm w.c. | Dwyer
Brand: Dwyer
SKU: 1221-M200-D
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![Dwyer 1221-M1000-W/M U-tube manometer | range 500-0-500 mm w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_2db88d98-948f-40b9-be00-52f8ceeaa488_medium.gif?v=1719997520)
1221-M1000-W / M | U-tube manometer | range 500-0-500 mm w.c. | Dwyer
Brand: Dwyer
SKU: 1221-M1000-W/M
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![Dwyer 1221-8-W/M U-tube manometer | range 4-0-4" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_6f7297fc-f57e-4d59-9b5a-8f9c00b846a9_medium.gif?v=1719997583)
1221-8-W / M | U-tube manometer | range 4-0-4" w.c. | Dwyer
Brand: Dwyer
SKU: 1221-8-W/M
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![Dwyer 1221-36-W/M U-tube manometer | range 18-0-18" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_710e2f3b-bbbe-4ec8-928a-701a3230adbd_medium.gif?v=1719997525)
1221-36-W / M | U-tube manometer | range 18-0-18" w.c. | Dwyer
Brand: Dwyer
SKU: 1221-36-W/M
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![Dwyer 1221-8-D U-tube manometer | range 4-0-4" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_811f9652-e300-434f-85b5-6a9e76c36c96_medium.gif?v=1719997532)
1221-8-D | U-tube manometer | range 4-0-4" w.c. | Dwyer
Brand: Dwyer
SKU: 1221-8-D
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![Dwyer 1221-36-D U-tube manometer | range 18-0-18" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_cf7ad759-7cb9-4d80-bc30-776b62089095_medium.gif?v=1719997602)
1221-36-D | U-tube manometer | range 18-0-18" w.c. | Dwyer
Brand: Dwyer
SKU: 1221-36-D
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![Dwyer 1221-20-W/M U-tube manometer | range 10-0-10" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_bc8b38c9-5ea7-42ba-bed2-7a353a3eb3a6_medium.gif?v=1719997627)
1221-20-W / M | U-tube manometer | range 10-0-10" w.c. | Dwyer
Brand: Dwyer
SKU: 1221-20-W/M
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![Dwyer 1221-20-D U-tube manometer | range 10-0-10" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_a2362cde-beec-4ae5-86d5-38c3afb9254c_medium.gif?v=1719997577)
1221-20-D | U-tube manometer | range 10-0-10" w.c. | Dwyer
Brand: Dwyer
SKU: 1221-20-D
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![Dwyer 1221-24-W/M U-tube manometer | range 12-0-12" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_854f9537-e67b-4ff1-8392-532c28780c09_medium.gif?v=1719997532)
1221-24-W / M | U-tube manometer | range 12-0-12" w.c. | Dwyer
Brand: Dwyer
SKU: 1221-24-W/M
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![Dwyer 1221-12-W/M U-tube manometer | range 6-0-6" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_997fdafe-a4a7-47b2-8272-d5c98cbeeff1_medium.gif?v=1719997563)
1221-12-W / M | U-tube manometer | range 6-0-6" w.c. | Dwyer
Brand: Dwyer
SKU: 1221-12-W/M
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![Dwyer 1221-16-D U-tube manometer | range 8-0-8" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_dd907666-921c-4dbe-a50e-5080d1d81687_medium.gif?v=1719997616)
1221-16-D | U-tube manometer | range 8-0-8" w.c. | Dwyer
Brand: Dwyer
SKU: 1221-16-D
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![Dwyer 1221-16-W/M U-tube manometer | range 8-0-8" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_6859d5a8-d6bf-4762-846c-20f48755769a_medium.gif?v=1719997521)
1221-16-W / M | U-tube manometer | range 8-0-8" w.c. | Dwyer
Brand: Dwyer
SKU: 1221-16-W/M
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![Dwyer 1221-24-D U-tube manometer | range 12-0-12" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_fddba42a-2bc1-4d6d-b9d0-193947544ae5_medium.gif?v=1719997552)
1221-24-D | U-tube manometer | range 12-0-12" w.c. | Dwyer
Brand: Dwyer
SKU: 1221-24-D
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![Dwyer 1221-12-D U-tube manometer | range 6-0-6" w.c. | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1221_1222_1223_family_1000x1000_1_medium.gif?v=1719997520)
1221-12-D | U-tube manometer | range 6-0-6" w.c. | Dwyer
Brand: Dwyer
SKU: 1221-12-D
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