How should micrometers be stored?

Micrometers should be stored with a gap between the spindle and the anvil to prevent the delicate measuring surfaces from being damaged. When the spindle is in contact with the anvil for prolonged periods, it can lead to wear or deformation of the measuring surfaces, affecting the accuracy of future measurements. By maintaining a slight gap, it helps ensure that the micrometer remains calibrated and retains its precision.

Storing micrometers with pressure applied to the spindle or with the spindle fully extended could cause unnecessary stress and wear on the components. Placing them in a toolbox without additional protection could expose them to physical damage or environmental factors that might affect their performance. Thus, maintaining a safe gap between the spindle and anvil is crucial for preserving the instrument's integrity and longevity.