Abstract: An auto-ranging sight includes an optical viewer that includes a reticle within the viewer. The reticle is a liquid crystal display having a plurality of horizontal lines which can individually be selected to be visible. A distance measuring device is provided for measuring distance from the sight to a target. Parameter information is input to a microprocessor to describe the flight of a projectile. The microprocessor also receives the distance information. The microprocessor then determines the required elevation for the optical viewer and attached weapon. It then selects one of the horizontal lines as the visible horizontal cross-hair. The operator then aligns the horizontal and vertical cross-hairs seen through the viewer such that the projectile can be accurately directed to the target. Optionally, a group of liquid crystal display vertical lines can be provided to accommodate windage adjustment for aiming the target.

Abstract: An exhaust gas sensor (10) is disclosed which includes a sensor element (12) and a member (48). The member (48) includes a hollow tube (50) and a seal disk (58). The seal disk (58) is urged into sealing engagement with an annular surface (14) on the sensor element (12) to prevent exhaust gas from entering the interior (26) of the sensor element (12). The inner electrode (22) of the sensor element (12) extends to the annular surface (14) in an annular ring (88). The seal disk (58) is permitted to contact the inner electrode (22) about the entire periphery of the ring (88).

Abstract: A method is provided for increasing the porosity of sintered metal coatings on zirconium oxide ceramics comprising the placing of the metallic coated zirconium oxide part in an acid solution, heating the solution to a temperature below the boiling temperature of the acid, maintaining the part in the acid solution for a sufficient period of time to increase the porosity to a predetermined amount, and removing the part from the acid solution.