Example: Used in piston cylinders to maintain smooth movement. This symbol controls the contour of a line within a specific tolerance zone. It ensures a precise shape along a linear feature. The ...
Some materials let electricity pass through them easily. These materials are known as electrical conductors. Metal is used in plugs to allow electricity to transfer from the wall socket ...
Looking for new ways to get students reading and responding to nonfiction? Try these exercises for discussion, writing and speaking. By Peggy Dimock Lead poisoning can cause lower I.Q.s ...