Mausoleum at Halicarnassus top was a quadriga: four massive horses pulling a chariot in which rode images of Mausolus and Artemisia. Modern historians have pointed out that two years would not be enough time to decorate and build such an extravagant building. Therefore, it is believed that construction was begun by Mausolus before his death or continued by the next leaders. The Mausoleum of Halicarnassus resembled a temple and the only way to tell the difference was its slightly higher outer walls. The Mausoleum was in the Greek-dominated area of Halicarnassus, which in 353 was controlled by the Achaemenid Empire. According to the
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