Fishing sinker weight acting as barbs. Claw sinkers are used in surf fishing on sandy bottoms with strong currents, mainly to prevent the sinker from getting carried off with the current. Upon casting a claw sinker, the line is briefly tugged so that the claws will dig themselves into the sand, allowing the rig to stay in place. An ideal material for a fishing sinker is environmentally acceptable, cheap and dense. Density is desirable as weights must be as small as possible, in order to minimize visual cues which could drive fish away from a fishing operation. In ancient times as well
Dual-sport motorcycle Dual-sport motorcycle A dual-sport motorcycle is a type of street-legal motorcycle that is designed for both on and off-road use. The terms all-road on/off road dual-purpose are also used for this class of motorcycles. Dual-sports are equipped with street-legal equipment such as lights, speedometer, mirrors, horn, license plate mounting, and muffler and can, therefore, be registered and licensed. The concept of a versatile motorcycle equally at home on dirt and pavement is as old as motorcycling itself. Most roads were still unpaved when motorized bicycles first appeared around 1900. In a sense, all motorcycles at that time were dual-sports, intended