![]() Although traditional type tools are being used from ancient times, their basic structure didn’t change. Some additional services like string stabilizer, attaching magnets are provided with some tools nowadays. The laser one is blessed with scientific advantage as it uses only laser light and gives you correct results on the vertical axis. You may think that the weight of the bob doesn’t matter, but that’s not right. Since the bob needs to be steady after hanging to take the measurements, the heavier weight rests faster than the lighter weights. Although you can use a mild bob if you’re measuring small heights, you must need a heavier one to measure gigantic things. Not only a bob must be heavier, but also a smaller one. Because accuracy, speed, and ease of use is the essential part of any tool. Though the earliest bobs were usually made from stone, bronze, and sometimes from bones and ivory, in the present brass and steel are mainly used. Most of the time the brass bob is equipped with a steel tip as the magnetic material helps the bob to align with the center of the earth. ![]() The shape of the bob needs to be symmetrical as the thread needs to be attached to the bob’s axis of symmetry and must have a pointed tip for accuracy. The bobs have mainly three basic types of shapes, naturalistic shape, geometric shape, and formal shape. ![]() The naturalistic shape includes the shapes of pointed fruits and vegetables. The geometric shape includes the pointed hexagonal, cone and cylindrical shapes. ![]()
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