In 1388, Bishop Ralph Erghum moved from Salisbury to Wells. He had previously been Bishop of Salisbury, from 1375 to 1388, and had installed a clock there in 1386. He may have brought his clockmakers with him to Wells. The two clocks are almost identical in construction, although the Wells clock shows some improvements and additions, which suggests that some valuable lessons had been learned. The Wells striking system uses a double lever, for example, which is more reliable than the system used in Salisbury. It can be safely assumed that the Wells clock and the Salisbury clock are roughly of the same age, as they share a lot of construction details. The assumption that both clocks were made in the 14th century is not verifiable, as only a payment to a keeper of a clock is mentioned, but no detail about the clock itself at the time is known.