Why the thickness of my printed object is thinner than the design?

[zjscxpc 0]

I design a 5 cm thickness cylinder. When I used cura 4.10 to slice this model with 0.1mm layerheight, only have 48 layers, I think it should have 50 layers. After measuring the printed cylinders, the thickness is 4.8 cm (5 cylinder measured). Can anyone tell me what happened? I will appreciate any comments. Please tell me how to make the thickness of object same with the design model.

[Labern 775]

I think you will find that the initial layer height will be greater the 0.1mm

This setting is hidden in your screenshot. You can search this setting or press menu button next to search settings, there is "manage settings visibility" and you can tick the box for it to show in your menu.

By default it is set at a fairly high layer height to aid with bed adhesion but it can be lowered to 0.1mm especially for a small print like this.