A Complete Source of Construction Survey Instruments.Over 40 Years Experience Calibrating & Repairing Instruments. Owner & Personnel are Certified Factory TrainedSales, Service and Rentals since 1949Calibration of construction auto levels, lasers, theodolites and total stations.We also calibrate & repair Jig Transits, Precision Levels, Alignment Scopes, Optical Tooling, K & E & Brunson with Traceable NIST Certification.New Instruments are Inspected & Calibrated In Store Prior to Selling.