Abstract: A plotting implement for creating a record on a photosensitive surface. The plotting implement includes a contact tip for contacting and for moving between different positions on the surface, the contact tip in use constituting an electromagnetic radiation source located at the surface, whereby the radiation source at the tip exposes points and/or lines of contact of the tip with the surface. The contact tip has a radiation aperture of a predetermined diameter to expose lines of a width equal to that diameter. An optic fibre of the required diameter may extend from an electromagnetic radiation source and terminate at the aperture. Alternatively the electromagnetic radiation source may comprise a light emitting diode (LED) having a transparent body tapering from the source of light towards the tip, the tapering body being surrounded by opaque material and being truncated before reaching a point to provide a tip of the transparent body of the predetermined diameter.

Abstract: A reusable, collapsible, rectangular hinged container comprising a novel foldable wall section or sleeve having strong, rigid weather-resistant wall panels and a pair of strong rigid, weather resistant top and bottom cap members, each of which overlaps with and supports a marginal area of the open wall section or sleeve to form the container. The wall section or sleeve contains a plurality of novel strong, rigid, panel-supporting hinge members which enable the sleeve to be folded to a flat condition in which it is completely receivable within and between the cap members to provided a compacted container to be returned to a supplier for reuse.