Mausoleum at Halicarnassus of the Mausoleum, only the foundation remains, and a small museum. Some of the surviving sculptures at the British Museum include fragments of statues and many slabs of the frieze showing the battle between the Greeks and the Amazons. There the images of Mausolus and his queen watch over the few broken remains of the beautiful tomb she built for him. Modern buildings whose designs were based upon or influenced by interpretations of the design of the Mausoleum of Mausolus include PNC Tower in Cincinnati, the Civil Courts Building in St. Louis; the National Newark Building in Newark, New Jersey;
Ruler (2400 BCE) have yielded one such ruler calibrated to about . Ian Whitelaw holds that the Mohenjo-Daro ruler is divided into units corresponding to and these are marked out in decimal subdivisions with amazing accuracy, to within . Ancient bricks found throughout the region have dimensions that correspond to these units. Anton Ullrich invented the folding ruler in 1851. Frank Hunt later made the flexible ruler in 1902. The equivalent of a ruler for drawing or reproducing a smooth curve, where it takes the form of a rigid template, is known as a French curve. A flexible device which can