Abstract: A pickup-bed cover prop having an elongated base, a pair of straps attached to the base, a pair of struts extending orthogonally from the base, and a clamp on each strut at the end distal from the end attached to the base. Each strut includes a mechanism which allows the length of the strut to be adjusted and secured. The prop is secured to the truck bed by lowering the rear gate of the pickup bed, passing the straps through the space between the rear edge of the bed and the bottom of the gate, aligning the base of the prop with the rear edge of the bed, and closing the gate, thereby securing the straps due to pressure applied to the straps by the rear edge of the bed and the bottom of the gate. The orientation of the cover is secured by clamping the clamps to the rear end of the cover, and adjusting and securing the lengths of the struts.

Abstract: A pickup-bed cover prop having an elongated base, a pair of straps attached to the base, a pair of struts extending orthogonally from the base, and a clamp on each strut at the end distal from the end attached to the base. Each strut includes a mechanism which allows the length of the strut to be adjusted and secured. The prop is secured to the truck bed by lowering the rear gate of the pickup bed, passing the straps through the space between the rear edge of the bed and the bottom of the gate, aligning the base of the prop with the rear edge of the bed, and closing the gate, thereby securing the straps due to pressure applied to the straps by the rear edge of the bed and the bottom of the gate. The orientation of the cover is secured by clamping the clamps to the rear end of the cover, and adjusting and securing the lengths of the struts.

Abstract: According to the invention a hygrometer is provided for measuring the moisture content of a gas, the hygrometer comprising a chamber 2 housing a hygrometer sensor 1, a gas inlet 3 for admitting gas into the chamber and a gas outlet 4 for allowing gas to leave the chamber, the apparatus being such that a drying medium can be stored in the chamber to dry the sensor and then be rapidly removed from the chamber prior to measurement, for example via a removable lid 5.