'Speedivac' high vacuum pump and compressor

Made:
1950-1955 in London
maker:
Edwards and Company
and
British Thomson-Houston Company Limited

"Speedivac" high vacuum pump and compressor, model 1SC30, serial no. 928, by W. Edwards and Co. (Ldn.) Ltd., London, England, belt driven from 0.25 h.p. a.c. motor type BS2408 no. D30003T, by British Thomson-Houston Company Limited, British, 1950-1955. Mounted on a common base plate.