


Dwyer Instruments 421-10 | Inclined/vertical manometer | Inclined range: 0-1.0" w.c. | .01 min. div. | 6-1/2" scale; vertical range 1.1-10" w.c. | min. div. .10 | 10-1/8" scale
The Dwyer® Series 420 Inclined-Vertical Manometer, model number 421-10, is a very accurate instrument that is specifically built for measuring tiny differential pressures precisely in test and laboratory settings. The 20" length of the angled range bore allows for sufficient multiplication to indicate fluid movement in this crucial lower portion of the range.

Free UAE shipping available
- Specifications
- Features
- Downloads
Accuracy | 0.25% |
Measurement method | Differential |
Measuring Units | inch H2O |
Minor Division | Inclined: 0.01 Vertical: 0.10 |
PRESSURE | Max: 10 IN of H2O |
Range | Inclined: 0-1.0" w.c. Vertical: 1.1-10" w.c. |
Scale | Inclined: 6-1/2" Vertical: 10-1/8" |
Series | Family: Dwyer Instruments Sensors |
Type | Inclined Tube Manometer |
Weight | 6-10 lb-oz |
- The 1-1/4" thick acrylic plastic body is a sturdy, nearly indestructible, stable piece of plastic that is completely devoid of any chance of distortion.
- The 3/16" BORES, ACCURATE TO ±.0002" are inherently straight and won't need to be re-calibrated due to distortion.
- LEVEL GROUND GLASS BUBBLE It is 1-1/2" long by.375" in diameter, sensitive to 115–125 sec./2 MM, and has two red lines for simple alignment and visibility.
- To obtain PARALLAX-FREE READING, which maximizes accuracy and consistency, just align the meniscus with the scale's polished aluminum reflection.
- For ideal readability, SELECTED GAGE FLUID with good wetability properties creates a steady, well-shaped meniscus.
- For simple zeroing, use the O-RING SEALED FLUID LEVEL PLUNGER ADJUSTMENT.
- To ensure that the equipment satisfies the highest standards, PRECISION BUILT.
Related Products

Dwyer Instruments 160E-05 | Ellipsoidal tip Pitot tube | 1.22 meter insertion length

Dwyer Instruments 160E-05 | Ellipsoidal tip Pitot tube | 1.22 meter insertion length

Dwyer Instruments HTDL-30 | High temperature data logger with 24" flexible probe

Dwyer Instruments HTDL-30 | High temperature data logger with 24" flexible probe

Dwyer Instruments HTDL-20 | High temperature data logger with 2" rigid probe

Dwyer Instruments HTDL-20 | High temperature data logger with 2" rigid probe

Dwyer Instruments WTDL-20 | Temperature data logger with humidity output

Dwyer Instruments WTDL-20 | Temperature data logger with humidity output

Dwyer Instruments WTDL-30 | Temperature data logger with probe attachment

Dwyer Instruments WTDL-30 | Temperature data logger with probe attachment

Dwyer Instruments 472A-1 | Digital input thermocouple thermometer

Dwyer Instruments 472A-1 | Digital input thermocouple thermometer

Dwyer Instruments DL-8T | 8-channel temperature logger

Dwyer Instruments DL-8T | 8-channel temperature logger

Dwyer Instruments UDL-114 | Universal data logger with internal temperature and RH sensors | Four universal inputs | LCD display

Dwyer Instruments UDL-114 | Universal data logger with internal temperature and RH sensors | Four universal inputs | LCD display