Pickaxe the tool. A pickaxe handle (sometimes called a "pickhandle" or "pick helve") without the head is sometimes used, often unofficially, as a baton: for example it is officially sometimes used as a baton in the British Army. In "The Grapes of Wrath" by John Steinbeck, pick handles featured prominently as a weapon used against the migrant farmers. A normal pickaxe handle is made of ash or hickory wood and is about three feet long and weighs about 2.5 pounds. British Army pickaxe handles must, by regulation, be exactly three feet long, for use in measuring in the field. New variant
Surveyor's wheel can be pushed or pulled along by a person walking. Early devices were made of wood and may have had an iron rim to provide strength. The wheels themselves would be made in the same manner as wagon wheels and often by the same makers. The measuring devices would be made by makers of scientific instruments and the device and handles would be attached to the wheel by them. The device to read the distance travelled would be mounted either near the hub of the wheel or at the top of the handle. In some cases, double-wheel hodometers were constructed.