Cross-staffs used for surveying, 1551. In this case they are being used to measure the width of a river by triangulation. From Rudimenta Mathematica by Sebastian Munster. (Basel, 1551).
Science & Nature Technology & Innovation
Science & Nature Geographical Features
Science & Nature Other
Pixel Dimensions (W x H) : 4804x3633File Size : 51,132kb
Downloading Heritage Images copyrighted content is subject to these terms and conditions.