WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Series 300 2 ¾" Dial High Precision Indicator for Gauge Pressure Indicators

Please note that WALLACE & TIERNAN is now a trademark of Evoqua Water Technologies LLC, and the products offered here are no longer manufactured under the WALLACE & TIERNAN name.

The manufacturing of the Wallace & Tiernan precision pressure gauges and calibrators has been relocated from Germany and are now being done in the U.S. by WIKA Instrument Corporation. They are certified to NIST Standards before shipment. The Certificate of Calibration is included at no additional cost

Series 300 2-3/4" Dial for Gauge pressure For test, laboratory, and production uses, this gauge gives accuracy in a compact size. It is sensitive, yet rugged and low in cost. Available in 18 standard ranges (including vacuum and compound ranges), the Series 300 is convenient to use. Pressure is applied to the capsule through a single connection in the case. Readings are referenced to atmospheric pressure in the case.


To 100 psig
0.33% of full scale
0.2% of full scale
Scale length:
7" through one pointer revolution
Dial diameter:
2 ¾"
Pressure element volume:
2.5 cc for the range 0-10 inH2O; 2.0 cc for all other ranges.
Case connection:
1/8" female NPT with built-in stainless steel filter. Connection located on back of case.
Case pressure:
Cases are open to atmosphere.
Case construction:
Cast, anodized aluminum with a highstrength, scratch-resistant plastic dial cover. Flush mounted by four screws through the bezel.
Zero adjustment:
A zero adjustment is accessible through the case front.
Material exposed to measured gas:
Beryllium copper, brass, soft solder in ranges to 100 inH2O; silver and soft solder in ranges above 100 inH2O.
Metric calibration (SI) units available at no extra cost. Other calibration units available at extra cost.


Series 300 2 ¾" Differential Pressure Gauge

Range & Calibration Ordering Number Graduation
0-10" water 62D-2C-0010 0.1"
0-20" water 62D-2C-0020 0.2"
0-40" water 62D-2C-0040 0.5"
0-60" water 62D-2C-0060 1.0"
0-100" water 62D-2C-0100 1.0"
0-200" water 62D-2C-0200 2.0"
0-300" water 62D-2C-0300 5.0"
0-400" water 62D-2C-0400 5.0"
0-15 psi 62D-2A-0015 0.2 psi
0-30 psi 62D-2A-0030 0.5 psi
0-60 psi 62D-2A-0060 1.0 psi
0-100 psi 62D-2A-0100 1.0 psi

Vacuum and Compound Ranges

Range & Calibration Ordering Number Graduation
-10" water to 0 62D-3C-0010* 0.1"
-20" water to 0 62D-3C-0020* 0.2"
-400" water to 0 62D-3C-0400* 5.0"
-5 to 0 to 5" water 62D-5C-0010* 0.1"
-10 to 0 to -10" water 62D-5C-0020* 0.2"
-20 to 0 to 20" water 62D-5C-0040* 0.5"
* Can be calibrated as shown, or in any other standard pressure unit at no extra cost.