----------------------------------+-----------------+-----------------+ | ~1912.~ | ~1913.~ | Model and date. | Mono. 2-seater. | Mono. 2-seater. | ----------------------------------+-----------------+-----------------+ ~Length~ feet. (m.)| 35-1/2 (10.75) | 35 (10.65) | ~Span~ feet. (m.)| 42-1/2 (12.95) | 42-3/4 (13) | ~Area~ sq. feet (m squared.)| 290 (27) | 285 (26-1/2) | {total lbs. (kgs.)| ... | 1212 (550) | ~Weight~ { | | | {useful lbs. (kgs.)| ... | 551 (250) | ~Motor~ h.p.| 65 Antoinette | 80 Laviator | {max m.p.h. (km.)| 63 (102) | 78 (125) | ~Speed~ { | | | {min m.p.h. (km.)| ... | ... | Number built during 1912 | ... | ... | ----------------------------------+-----------------+-----------------+ Notes.--Wood construction. Landing: wheels and one skid. _Controls_: warping wings and rear elevator. Triangular body. The two models are very nearly identical. [Illustration: MARTIN-HANDASYDE. UAS.] ~P~ PIGGOTT. Piggott Bros. & Co., Ltd., 220, 222 & 224, Bishopsgate, London, E.C. This well-known firm of shed makers built a novel biplane in May, 1910 (details _Flight_, May 21st, 1910), and in 1911 a monoplane with enclosed body (_Flight_, April 1st, 1911). In 1912, both were disposed of, and the firm is not proceeding with its experiments. It has, however, a staff of skilled mechanics and a great deal of floor space for the construction of aeroplanes to specifications. PLANES. Planes, Ltd., 6, Lord Street, Liverpool. Works: Duke Street & Cleveland Street, Birkenhead. Not building at present. In October, 1910, the firm produced a biplane, designed by W. P. Thompson, fitted with a special pendulum stabilising device. This was followed a year or so later by a monoplane. ~R~ RADLEY-ENGLAND. This is not an aeroplane firm, but a special hydro built by two well-known aviators for the _Daily Mail_ competition. ~Length,~ 22 feet. ~Span,~ 50 feet. 2 floats, 15 feet long by 1 foot 5 inches wide. Pilot in starboard float. ~Weight,~ with petrol for 12 hours, 1,380 lbs. ~Motor,~ 150 h.p., made up of 3--50 h.p. Gnomes, but two Greens to be fitted for competition. One 4-bladed propeller in rear. ~Speed,~ 60 m.p.h., with 100 h.p. ~S~ SANDERS. This firm appears to have ceased to exist.