Q:

How can I change Photoshop's Extrusion Depth unit of measurement?

I have created the following image, by heading to 'Windows > 3D > Extrusion > Create' within Photoshop:

I would now like to reduce its Extrusion Depth, using Millimeters as the unit of measurement.  At present, the Extrusion Depth is set at 224 as per the below screenshot:

I can only assume this is a Pixel Measurement.  Is this the case and if so, is there a way to change its Unit of Measurement?

A:

When you create the 3D extrusion you can see in the Properties panel that the unit for Extrusion Depth is indeed px:

Also in the little preview window that pops on top of the canvas:

But you'll get an error if you try to type a different unit in the Properties panel. You need to click on the Coordinates button and there you can change the units:

