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Original Truck Bed Rack Prototype, Invented in 1960 by PIERCE METAL PRODUCTS, Inc. Even though bed racks have gained great popularity over the last decade, the first bed rack was introduced in the 1960s by Pierce Metal Products Inc. [1] Its primary purpose was defined as to build the sides of the carrying box of the truck adjustable to the side of the cargo and to the type of the vehicle.
On-board scales are mobile weighing systems that have been integrated into a vehicle, such as a flatbed truck or semi-trailer. [1] In the United States, such scales are used primarily as a self-check for weight compliance. Thus the operator can use the scale to determine the weight of the vehicle as it is loaded. [2]
Topographer's rods are special purpose rods used in topographical surveys. The rod has the zero mark at mid-height and the graduations increase in both directions away from the mid-height. In use, the rod is adjusted so that the zero point is level with the instrument (or the surveyor's eye if he is using a hand level for low-resolution work).
Artisan fishing uses traditional fishing techniques such as rod and tackle, fishing arrows and harpoons, cast nets, and small (if any) traditional fishing boats. For that reason, socio-economic status of artisanal fishing community has become an interest of the authorities in recent years.
A portable truck scale will have lower frame work that can be placed on non-typical surfaces such as dirt. These scales retain the same level of accuracy as a pit-type scale, with accuracy of up to + or - 1%. The first portable truck scale record in the US was units operated by the Weight Patrol of the Los Angeles Motor Patrol in 1929. Four ...
A ranging rod, or range rod, is a surveying instrument used for marking the position of stations, and for sightings of those stations, as well as for ranging straight lines. [1] Initially these were made of light, thin, and straight bamboo , or of well seasoned wood such as teak , pine , or deodar .
The series was originally divided into Pro, Sportsman, and Grassroots divisions. [5] [11] The Pro division is headlined by a four-wheel drive (PRO 4WD) trophy truck class.It also has a two-wheel drive trophy truck class (PRO 2WD) and a light-duty two-wheel drive pickup truck class (PRO Light).
Genaille–Lucas rulers (also known as Genaille's rods) are an arithmetic tool invented by Henri Genaille, a French railway engineer, in 1891. The device is a variant of Napier's bones . By representing the carry graphically, the user can read off the results of simple multiplication problems directly, with no intermediate mental calculations .