opisometer - Used to measure the length of a short curved line, mass - The amount of matter in a substance, volume - The amount of space an object occupies, calipers - Used to measure the diameter of a coin, measuring cylinder - Measures the volume of a liquid, trundle - This wheel can be used to measure the length of a playing field, metre - A unit of length, squaremetre - Unit of area, meniscus - The dark curved line on the surface of a liquid,

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