A simple single action vacuum pump for use where very high degrees of vacuum are not required. Comprises an air pump (PM 487) with ground bell jar plate of 200 mm. diameter. The plate provided with a riffled inlet nozzle and a stopcock for air regulation. The complete apparatus is mounted on wooden base of size 350 x 210 mm., provided with four rubber feet.
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Ram Nagar, Ambala, Haryana