The deservedly popular and elegant banjo barometer can trace its development back to 1664 when Robert Hooke invented the wheel operating system. Its great advantage was the extended scale that allowed more accurate readings to be made. The designs of the Regency Range date from the latter years of the 18th century. The addition of a spirit level allows the instrument to be hung vertically and the model 603A, with a butler’s mirror, allowed a discreet eye to be kept on proceedings in the hall or dining room. All these barometers have silvered dials, and mercury column registering or aneroid movements are available as indicated.