A mainly varnished mahogany model of a jibbed crane with chain main lift with weighted hook, roller jib height adjustment, both for hand operation with ratchets and brake, the mounting platform stamped RD No. 510603 with brass plate embossed 'Caution Load Not to Exceed 10 Tons', the whole mounted on a four wheel trolley -- 21 x 17½in. (53.3 x 44.5cm.)