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Robust, colour co-ordinated, accurate timers. 10 of 1 min (green), 3 min (yellow), and 5 min (blue). 9 cm.
The robust, colour co-ordinated sand timers give accurate interval times for individual pupil use. Ideal for use in science, maths. Includes 10 of each of the following 3 interval times, 1 min (green), 3 min (yellow), and 5 min (blue). Plastic. ø 2.5 x 9 cm high.
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