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Thel-Mar Co

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Gillespie Circle
Brevard, NC 28712-1529
About Thel-Mar Co
  • Thel-mar is a manufacturer of the compound Volumetric Weir. The Thel-mar Volumetric Weir is the most practical and economical calibrated measuring devise used to determine infiltration in newly installed sewer lines, as well as substantial flows in existing pipes. Our weirs offer the advantage of a 90 degree v-notch for measuring small infiltration flow where accuracy is of prime importance. The rectangular portion of our compound weir measures larger volume flow rates.