He constructed rocket-launching platforms, which allowed to fire in salvos (6 rockets at a time), and gun-laying devices.
The first recorded device to measure an elevation angle was Niccolò Tartaglia's invention of a gunners' quadrant circa 1545.
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An example of the practical approach are the trials conducted by William Eldred, Master Gunner at Dover Castle, in 1613, 1617 and 1622 with various types of guns (Whole culverin, Demy culverin, Saker & Falcon).
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The MIT Radiation Laboratory was formed to develop radar and this led to gun-laying and aircraft radar and the LORAN navigation system.