73391906
Sep 29, 1982
Jun 19, 1984
Civil Engineering Instrumentation-Namely, Vibration Meters, Position Indicators, Extensometers, Vibrating Wire Thermometers, Pore Pressure Gauges, Pressure Cells, Dynamometers, Borehole Clinometers, Ground Settlement Testers, Tube Deformation Testers, Ground Altitude Testers, Ground Displacement Sensors, Piezometers, Inclinometers, Levelling Apparatus for Measuring Changes in Level and Differential Settlements within Structures or for Surveying Localized Unstable Zones Such as Landslides, Three-Axis Joint Meters, Horizontal Displacement Monitors, Strainmeters and Apparatus for Measuring Displacement of Tunnels
Electrical and Scientific Apparatus