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| New line of precision circular "bulls-eye" bubble levels ![]() Manufactured to exacting specifications, the accuracy is guaranteed and maintained through the use of precision ground glass and machined Aluminum. Rigorous testing completed to assure high performance over long-term all weather conditions, including industry standard Salt Fog survivability per ASTM B117. Each instrument is filled with a special damping fluid that controls the movement of the bubble, for smooth accurate readings. The fluid combined with large, clear markings make it easy to get quick, accurate readings under a wide variety of severe environmental conditions. write your comments about the article :: © 2010 Construction News :: home page |