spherometer การใช้

• The position of the rod is determined by a micrometer screw gauge or spherometer.
• Electronic instrumentation similar to the spherometer in design are modified at inspection plants for casing, tubing, and drill pipe.
• This approach reproduces the well-known result for the spherometer and also leads to a scheme to study aspherical surfaces.
• Since the spherometer is essentially a type of micrometer, it can be employed for purposes other than measuring the curvature of a spherical surface.
• A related device is the Cylindrometer ( also known as Cylindro-Spherometer and Sphero-Cylindrometer ), which can additionally measure the right-circular cylinder
• A contact-lever, delicate level or electric contact arrangement may be attached to the spherometer in order to indicate the moment of touching more precisely than is possible by the sense of touch.
• To measure the radius of a sphere e . g . the curvature of a lens the spherometer is levelled and read, then placed on the sphere, adjusted until the four points exert equal pressure, and read again.