Patent ID: 9482523
Filing Date: 2016-11-01
CPC Classification: G01B

Claim Text:
1. An air micrometer for measuring a thickness of a polymer battery packaging material or sealing part, which is a target object to be measured, by using a change in pressure of air sprayed onto the target object, the air micrometer comprising: a target object accommodation slot having a bottom surface and a ceiling surface to accommodate at least one portion of the target object between the bottom surface and the ceiling surface; an air spray unit comprising a nozzle opened in the bottom surface or the ceiling surface to spray the air onto the target object that is accommodated between the bottom surface and the ceiling surface; at least one sidewall laterally supporting the target object accommodated in the target object accommodation slot to restrain a transversal oscillation of the target object; and a guide unit having at least one inclined surface of an inclined surface that extends upward from an end of the ceiling surface or an inclined surface that extends downward from an end of the bottom surface, wherein the sidewall and the guide unit are connected to each other, and wherein an inclination angle of the inclined surface is fixed.