Gas Measurement Equipment Sales & Service Sustain accurate gas measurement with the help of the experienced staff at Carl Poe Company, Inc., a leading gas meter repair and NIST calibration facility in Houston, TX. We carry a large stock and variety of new Elster American Meter products and parts as well as a wealth of experience in gas measurement. Our repair and calibration facility provides service as well as a vast offering in refurbished gas meters. Let us help you with your measurement needs to provide efficient and accurate measurement.