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Hammer is indispensable to carpenters as an important tool. However, it is often difficult for people to find a perfect distance and direction when they use the hammer to drive the nail, under which situation the nails to be driven may not be in one straight line and the distance among nails may not the same. Furthermore, unnecessary troubles may be caused from time to time.
This hammer combines the indicator light and the degree scale. When people use it, they can easily find the next position they need once they determine the beginning and the ending position and open the indicator light.