Abstract: The present invention relates to a sensor module for detecting unevenness of a surface, especially for detecting bulging and bowing of the pipe external surface. The sensor module comprises an arm assembly comprising an arm body having at least two ends, one or more surface contacting element mounted to at least one end of the arm body; a magnet assembly comprising at least one magnet to generate magnetic lines of force; and a magnetic sensor assembly comprising a magnetic sensor being assembled adjacent to the magnet for sensing changes in the magnetic lines of force in response to movement of the arm body. The invention also relates to an apparatus comprising the said sensor module and a method for detecting unevenness of a surface using the said sensor module.

Abstract: A floating arrangement may include at least one support-floatation-unit for supporting a solar panel, the at least one support-floatation-unit has a main body having a flat base and at least one connection portion; and at least one connecting-floatation-unit having a flat base and at least one connection portion. The respective corner-connection-portions may be coupled together to form a connection joint connecting the support-floatation-unit and the connecting-floatation-unit in a side-by-side arrangement. A height from the base of the support-floatation-unit to the connection joint may be larger than a height from the base of the connecting-floatation-unit to the connection joint such that the base of the support-floatation-unit may extend downwards from the base of the connecting-floatation-unit by a depth which defines an additional displacement volume of the support-floatation-unit configured to provide additional buoyancy to support the solar panel.

Abstract: A connection assembly having a nut and a first-snap-fit-engagement-arrangement. The connection assembly further has a first body with a first lug having a second-snap-fit-engagement-arrangement. The nut is coupled to the first lug with the nut, in a manner so as to engage the first-snap-fit-engagement-arrangement with the second-snap-fit-engagement-arrangement such that the nut is non-movable relative to the first lug. The connection assembly further has a second body with a second lug. The second lug is placed over the first lug and a bolt is inserted through respective through-holes of the first lug and the second lug and threaded through a threaded hole of the nut.