Instrument for navigation
                                Date
                            
                            
                                21 September 1669
                            
                            
                        
                            
                            
                            
                                Object type
                            
                            
                            
                        
                            
                            
                            
                                Archive reference number
                            
                            
                            
                        
                            
                            
                            
                                Manuscript page number
                            
                            
                                p8
                            
                            
                        
                            
                            
                            
                                Material
                            
                            
                            
                        
                            
                            
                            
                                Dimensions
                            
                            
                                height (page): 320mm
width (page): 196mm
                            
                        
                            
                            
                            width (page): 196mm
                                Subject
                            
                            
                            
                        
                            
                            
                            
                                Content object
                            
                            
                            
                        
                            
                            
                            
                                Description
                            
                            
                                This is a figure of an instrument to navigate under water. This was part of a letter from Robert des Gabetz to Robert Moray, which was read to the Royal Society on 2 December 1669.  Gabetz had suggested various inventions, which Moray judged to be 'either already better done here or were not likely to perform what they pretended to'.
Copied from EL/G1/32/003.
                            
                            
                        
                            
                            
                            Copied from EL/G1/32/003.
                                Object history
                            
                            
                                At the meeting of the Royal Society on 2 December 1669, ‘Sir Robert Moray produced a Latin paper sent from Paris by one Robert Desgabetz, containing several inventions, as 1. Of finding the parallax by a better way than the author thought to have been invented hitherto, in order to find the physical truth of the Copernican system. 2. Of a perpetual motion by means of the Cartesian materia striata, by which magnetic needles are converted to the poles, etc. 3. Framing ships after a new manner, to go under water without danger of ship-wreck. 4. Of an horizontal wind mill. 5. Of a new fashioned musical instrument, excelling a theorbo, harp, basis-viol, etc. 6. Of a pocket pendulum watch; which  appeared to be the same with that of Mr. Hooke. Sir Robert Moray having perused this paper declared his opinion, that the several contrivances, contained in it, were either already better done here or were not likely to perform what they pretended to’ (Birch 2:409-10).
                            
                            
                        
                            
                            
                            
                                Related fellows
                            
                            
                                Robert Moray (1608 - 1673, British) , Natural philosopher
                            
                            
                        
                            
                            
                            
                                Associated place