Millionth measuring machine
                                Date
                            
                            
                                1877
                            
                            
                        
                            
                            
                            
                                Creator
                            
                            
                                Henry Adlard (1799 - 1893, British) , Engraver
                            
                            
                        
                            
                            
                            
                                Object type
                            
                            
                            
                        
                            
                            
                            
                                Library reference
                            
                            
                                RCN41234
                            
                            
                        
                            
                            
                            
                                Material
                            
                            
                            
                        
                            
                            
                            
                                Technique
                            
                            
                            
                        
                            
                            
                            
                                Dimensions
                            
                            
                                height (print): 175mm
width (print): 246mm
                            
                        
                            
                            
                            width (print): 246mm
                                Subject
                            
                            
                            
                        
                            
                            
                            
                                Content object
                            
                            
                            
                        
                            
                            
                            
                                Description
                            
                            
                                Side view of a Whitworth Company measuring machine, capable of detecting variations in length to one millionth of an inch. 
 
Figure 33 from the book The Whitworth measuring machine…, by T.M. Goodeve and C.P.B. Shelley (Longmans, Green & Co., London, 1877).
In the accompanying text, the authors state that: ‘It will be readily understood that the measuring machine, as constructed, is rather a machine for comparison than for simple measurement…The apparatus is to be regarded as a machine for measuring very minute differences in the length of bars specially prepared for end measurement. It is therefore peculiarly adapted for multiplying copies of standards of length.’
 
Inscribed below: ‘H. Adlard sc. FIG.33. PERSPECTIVE VIEW OF WHITWORTH’S MILLIONTH MEASURING MACHINE. London: Longman & Co.’
Sir Joseph Whitworth (1803–1887), British mechanical engineer and machine tool manufacturer, was elected a Fellow of the Royal Society in 1857.
                            
                            
                        
                            
                            
                            Figure 33 from the book The Whitworth measuring machine…, by T.M. Goodeve and C.P.B. Shelley (Longmans, Green & Co., London, 1877).
In the accompanying text, the authors state that: ‘It will be readily understood that the measuring machine, as constructed, is rather a machine for comparison than for simple measurement…The apparatus is to be regarded as a machine for measuring very minute differences in the length of bars specially prepared for end measurement. It is therefore peculiarly adapted for multiplying copies of standards of length.’
Inscribed below: ‘H. Adlard sc. FIG.33. PERSPECTIVE VIEW OF WHITWORTH’S MILLIONTH MEASURING MACHINE. London: Longman & Co.’
Sir Joseph Whitworth (1803–1887), British mechanical engineer and machine tool manufacturer, was elected a Fellow of the Royal Society in 1857.
                                Associated place