R.E.D. clocks all seem to have the same format of a nickel-plated case of drum form with balustraded glazed movement with chain fusee and two-plane escapement. Why exactly they were of this format and not of the more conventional rectangular size is somewhat of a mystery.
Charles Allix op. cit suggests that the first escapement of this type was made by Thiout some 130 years earlier and was used in conjunction with a pendulum. The advantage of the two-plane escapement is the negation of a contrate wheel whilst at the same time allowing the balance staff to be planted vertically