Trend Thermometers, Wallace & Tiernan gauges and calibrators, are now part of Wika

BSI is your source for WIKA and  former Wallace Tiernan precision pressure gauges, former Wallace Tiernan pressure calibrators and other products.


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.