A form measuring instrument measures a form of a surface of an object to be measured using a contact to follow the surface. An arm is rotatably mounted to the mounting portion of the U-shaped body and includes bores defined at its opposite ends. In some embodiments, at least two pairs of external contacts are disposed at distinct longitudinal levels along a channel, and a slider including multiple longitudinally-spaced capacitors is moved longitudinally within the channel to establish electrical contact between the external contact pairs and different capacitors along the slider. In the cold process, a type of grind is formed that is the same as the hot process except it is a dry powder. The content of the content of the non-ionized, heat-activated nano-catalyst is 0. A seat adjustment device of the seat has a clutch unit provided between the lever and a rotation member of a movement mechanism.