| 摘要 |
An adjustable measuring apparatus for repeatably measuring a selected volume. The adjustable measuring apparatus includes a hollow sleeve having two sleeve apertures formed through opposed spaced apart surfaces of said sleeve. A first sleeve aperture formed on a top side of the sleeve is formed for receiving material therethrough. A second sleeve aperture formed on a bottom surface of the sleeve is formed for dispensing material therethrough. A cylinder is rotatably retained in the sleeve and has a cylinder aperture formed therethrough for selectively communicating with the first and second sleeve apertures. A piston is adjustably retained in the cylinder for adjustably controlling a volume of the cylinder. An adjustment member is provided and attached to the piston for adjustably positioning said piston in the cylinder. A handle is attached to the cylinder independent of the adjustment member for rotating the cylinder positioned in the sleeve about a major axis for selectively communicating the cylinder aperture with one of the two sleeve apertures. The adjustment member is concealed behind the handle and accessible therethrough for adjustment of the piston in the cylinder for adjustably controlling the volume of the cylinder.
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