Gunners calculating the elevation of a piece of

Gunners calculating the elevation of a piece of artillery using a clinometer and a quadrant marked with shadow scales. Around them are barrels of gunpowder, cannon balls of various sizes. On the left a mortar is being discharged. From Architechtur.. Mathematischen.. Kunst by Gaultherius Rivius (Nuremberg, 1547). Woodcut

1547 Ballistics Balls Calculating Discharged Elevation Gunners Gunpowder Kunst Mortar Quadrant Scales Sizes

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