In a unit for a cutting apparatus in a non-limiting embodiment of the present disclosure, a second shaft, a first blade member, and a second blade member individually have conductivity. A detection means includes a power source, a connection terminal attached to a holder, a light emitting device attached to the holder, first wiring that electrically connects the connection terminal and the power source, second wiring that electrically connects the second shaft and the power source, third wiring that electrically connects the light emitting device and the connection terminal, and fourth wiring that electrically connects the light emitting device and the first blade member.

An apparatus for cutting a sheet of aerosol generating material includes a first cutting element having a cutting edge and a second cutting element. The first cutting element is rotatable about its central axis and the second cutting element that is rotatable about its central axis. The central axis of the first cutting element and the central axis of the second cutting element are spaced apart by an initial pre-defined distance. The first and second cutting elements are configured to cut a sheet of aerosol generating material as it is conveyed between the first and second cutting elements. The apparatus further includes a housing configured to support the first cutting element relative to the second cutting element. The housing includes an anti-backlash gear coupled to the first cutting element. The housing is adjustable to move the first cutting element relative to the second cutting element to set a new pre-defined distance between the central axes of the first and second cutting elements. The present invention also relates to a method of adjusting an apparatus for cutting a sheet of aerosol generating material.