Abstract: A dispensing spoon comprising a handle, a scoop having an open mouth formed at one end of the handle, a powder leveling means in the form of a wiper part which is coupled integrally and flexibly to an opposite end of the handle remote from the scoop and which can be displaced manually in a sweep plane so as to sweep laterally over the mouth of the scoop for powder leveling purposes, and a counter which is automatically advanced by operation of the powder leveling means. The counter includes a counter disc having a plurality of numbers around its surface and is arranged to be indexed by one number when the wiper part is displaced to sweep over the scoop mouth to perform a powder leveling operation. The counter disk is journalled on the wiper part or the handle for rotation in a plane parallel to the sweep plane of the wiper part so that the numbers are displayed upwardly. The counter disc has on its underside a ratchet wheel having a plurality of teeth.

Abstract: A two-axis angle sensor comprising a pair of bubble chambers (3,4) and associated bubble detectors (5,6). A processor (42) calculates the angle of the sensor by combining the signals from the first and second bubble detectors in accordance with a predetermined algorithm. A radiation source (1) illuminates a bubble (8) with radiation whereby the radiation is refracted by the bubble. A radiation detector (5,6) is positioned to detect the refracted radiation from the bubble and generate a signal indicative of the angle of the bubble chamber. An angle sensor is used to calibrate a vibrating structure gyroscope (70). A flywheel (91) is provided to generate a gyroscopic resistance to operator input. A method of manufacturing a bubble angle sensor is disclosed, the method employing a lid (61) with an internal recess (65).