Abstract: An apparatus or system for identifying a conduit, having a flexible wall, and comprising at least one open end. The apparatus or system has a gas pressure signal generator for applying a pressure signal at the open end of the conduit to be identified to cause the conduit to be subjected to an increase in internal gas pressure. At least one sensor is provided for measuring, at a measuring location remote from the open end, at least one of the following variables a) width of the conduit, b) diameter of the conduit, c) temperature of the conduit wall, d) load on the conduit wall, and e) strain on the conduit wall. The conduit is identified when the sensor(s) detect(s) a change or changes in the variable(s) experienced by the conduit so identified in response to the gas pressure signal.

Abstract: A log measurement system for measuring individual logs, each log comprising a log-end face with an applied reference marker of known characteristics. The system includes an image capture system operable or configured to capture a digital image or images of the log-end face of a log to generate a log-end image capturing the log-end face and reference marker. The system also includes an image processing system that is operable or configured to process the captured log-end image to detect or identify the log-end boundary of the log and generate measurement data associated with the log-end boundary in real-world measurement units based on the known characteristics of the reference marker.