220-730 Dial Hygrometer
225-930 Dial Thermohygrometer
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| 220-730 Dial Hygrometer | 225-930 Dial Thermohygrometer |
When great accuracy (± 3%) is called for, specify the Model 220-730 Precision Hygrometer. It has a polished brass case (6" dia x 1‑5/8" D) and a 4‑3/4" white dial, graduated every 1%. The "Supratherm" synthetic sensor element is very responsive and durable. Three holes in the flange permit easy wall mounting (screws included).
The Model 225-930 Precision Thermohygrometer provides accurate humidity and temperature readings. It's an ideal instrument for homes, museums, health clubs, storage facilities, etc. The upper scale shows humidity from 20% to 100%, as measured by the "Supratherm" element, which is accurate to ± 3%. The lower scale is temperature, from ‑4° to 122°F (°C also). The polished brass case is 6" dia x 1‑5/8" D. The white dial is 4‑3/4" dia. In the flange there are three holes for mounting (screws included) to a wall.
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