Which components of an outside micrometer are adjusted to make contact with the object being measured?

The components of an outside micrometer that are adjusted to make contact with the object being measured are the anvil and spindle. The anvil is a fixed part of the micrometer, and the spindle is the moving part that is used to modify the gap between the anvil and itself. When measuring an object, the user carefully turns the ratchet or thimble to advance the spindle towards the object until it makes contact with the anvil. This contact allows for precise measurements of the object's thickness or diameter.

The micrometer's design ensures that the anvil and spindle work together to provide accurate readings. The precision of the micrometer relies heavily on the ability of these components to create a tight and uniform contact with the measurements being taken. The other components, such as the sleeve and lock nut, play different roles in the micrometer's function but do not adjust for contact during measurement. The sleeve typically displays the measurement scale, while the lock nut helps secure the micrometer setting after the measurement has been taken.