The Clark-Reliance Corporation announced on Jan. 19 the 2015 edition of its Boiler Inspection Guidelines for Drum Level Instrumentation. The easy-to-understand guidebook concisely presents water gage inspection requirements for handy, on-the-job reference by boiler operators, the company noted in a statement. It includes requirements for water columns, water gage valves, gage glass, remote level indicators, magnetic water level gages and water column isolation shutoff valves. The free book is available online at http://www.boilerinspectionguide.com/.