Dumaresq

English Etymology 1 en :der fr:du marais<ety:af<du><marais>> A variant of en Desmarais, from fro du maresc of the marsh 1, from fro la-med mariscus 1, from en frk *marisk marsh, swamp. Proper noun en French. en locality in the carea/Armidale and the carea/Uralla north-eastern s/New South Wales c/Australia. Derived terms en Dumaresq Island Dumaresq Valley Etymology 2 thumb|A scheme of the Mark III Dreyer Table which utilized the Dumaresq. en Australian rear admiral John Saumarez Dumaresq John_Saumarez_Dumaresq 1873 1922. Noun en military A mechanical calculator used to gauge the speed of missiles and enemy ships. en 1913 Thomas Allnutt Brassey The Naval Annual https://www.google.com/books/edition/_/NQJAAAAAYAAJ NQJAAAAAYAAJ 320 ... an instrument known as the "Rocord" has been devised by Messrs. Barr and Stroud. This apparatus works upon the same principle as the Dumaresq instrument, but it determines the rate of change and the deflection automatically, ...