Abstract: The laser positioning device (10) as a housing (12) and a number of individual diode lasers (18) accommodated in the housing. The diode lasers can be energized to produce individual laser beams. Beam fanning means, preferably in the form of tubular lenses (28), are used to fan the laser beams to produce parallel, fanned beams (65) which are then projected from the housing (12) through a window (58). The positions of at least some of the diode lasers in the housing are adjustable by means of an endless cable and pulley mechanisms.

Abstract: In the method, relatively inclined beams of light are projected towards the target from spaced locations at the station from which the distance to the target is to be measured. The locations are moved relative to one another along a linear path to bring the illuminated zones on the object together. The spacing of the locations then gives an indication of the distance sought to be measured. Apparatus for carrying out the method is also described.

Abstract: A device for holding fencing or similar wire (single-strand or double-strand) to a structure such as a fence post, comprises a body having a first passage through which the wire passes. A second intersecting passage carries a ball or disc which is spring-biased towards the intersection but rolls in the second passage into a position in which it locks the wire under tension. A stop surface at the end of the second passage limits the penetration of the ball or disc into the wire under severe tension.

Abstract: A device for holding fencing or similar wire (single-strand or double-strand) to a structure such as a fence post, comprises a body having a first passage through which the wire passes. A second intersecting passage carries a ball or disc which is spring-biased towards the intersection but rolls in the second passage into a position in which it locks the wire under tension. A stop surface at the end of the second passage limits the penetration of the ball or disc into the wire under severe tension.

Abstract: A device for holding fencing or similar wire (single-strand or double-strand) to a structure such as a fence post, comprises a body having a first passage through which the wire passes. A second intersecting passage carries a ball or disc which is spring-biased towards the intersection but rolls in the second passage into a position in which it locks the wire under tension. A stop surface at the end of the second passage limits the penetration of the ball or disc into the wire under severe tension.

Abstract: Retro-reflective material is made by applying a mono-layer of transparent glass beads to a tacky coating formed on a carrier sheet, coating exposed parts of the beads with a reflective material such as aluminium, and embedding the reflectively coated parts of the beads in an adhesive coating on a backing member. The carrier sheet is then stripped off. The thickness of the adhesive coating on the backing member is less than the typical diameter of the beads, and the thickness of the tacky coating on the carrier sheet is less than that of the adhesive on the backing member. In some cases screens or stencils are interposed between the carrier sheet and the backing member. Products resulting from these processes are described.