Mechanism of the clock at the Royal Observatory, Greenwich
                                Date
                            
                            
                                15 February 1677
                            
                            
                        
                            
                            
                            
                                Creator
                            
                            
                                John Flamsteed (1646 - 1719, British) , Astronomer
                            
                            
                        
                            
                            
                            
                                Object type
                            
                            
                            
                        
                            
                            
                            
                                Archive reference number
                            
                            
                            
                        
                            
                            
                            
                                Manuscript page number
                            
                            
                                f32 p1r
                            
                            
                        
                            
                            
                            
                                Material
                            
                            
                            
                        
                            
                            
                            
                                Dimensions
                            
                            
                                height (page): 310mm
width (page): 196mm
                            
                        
                            
                            
                            width (page): 196mm
                                Subject
                            
                            
                            
                        
                            
                            
                            
                                Content object
                            
                            
                            
                        
                            
                            
                            
                                Description
                            
                            
                                Sketch showing the arrangement of wheels and cogs in the great clock at Greenwich, with their physical dimensions. When the clock-maker Thomas Tompion (1639–1713) took the clock apart to adjust its speed, John Flamsteed took the occasion to describe it to Richard Towneley. The letter is dated 15 February 1677.
                            
                            
                        
                            
                            
                            
                                Related fellows
                            
                            
                                John Flamsteed (1646 - 1719, British) , Astronomer
                            
                            
                        
                            
                            
                            
                                Associated place