A good set of silver drawing instruments, Dollond, London, early 19th Century

signed on a number of the instruments Dollond, London, the silver-bound rosewood veneered case with velvet-lined interior containing parallel rule and semi-circular protractor, gunners calipers, rectangular protractor and sector, the upper tier containing proportional compasses, triangular compasses and other drawing implements (incomplete), the damaged lid inset with an engraved plaque