Abstract: The invention relates to a device and method for measuring the quantity of an agricultural product comprising at least one ultrasonic transducer device configured to measure the height of the agricultural product with respect to a ground. At least two ultrasonic transducers configured to allow the orientation or slope of the ground to be calculated, such that the at least three transducers can be at arbitrary orientations with respect to the ground when the device is in motion.

Abstract: The invention provides a system and method system for measuring agricultural parameters, for example the quantity of an agricultural product such as grass. The system comprising means for triggering a measurement of data and repeating the measurement at a plurality of locations over an area; means for communicating the measurement data to a processing means; and means for calculating the quantity of agricultural product for the area using the processing means. The invention solves a problem of how to effectively and simply measure an agricultural product, such as grass, and provides a benefit by allowing the farmer to quickly and accurately measure their grass in a particular field or area.

Abstract: An equatorial sundial apparatus with an adjustable base assembly utilizing one or more concave cylindrical focusing mirrors. One of the benefits that is derived from this apparatus is the use of one or more concave cylindrical mirrors to project a focused beam of light onto a calibrated surface from which the time can be read. This sundial has the additional benefit of not suffering from blurring of the time indicator in a shadow or non-focused beam of light typical of other sundials. This sundial's focused light forms a sharply demarcated indicator from which time can be read to the minute. A further benefit of this apparatus is the ability to incorporate multiple concave cylindrical focusing mirrors to reduce the size of the visual field or screen where the time is read and to incorporate various shapes and designs for ornamental purposes without significant compromise of the sundials accuracy for telling time.