How to rotate a 3D object by a specific amount

[MdesignAZ]

I have a 3D object (a 3D layer from a .obj file) that I would like to rotate along the Y axis by 180 degrees. I can click and drag the handle, but how can I tell it to rotate by that specific amount? 

It's very fiddly trying to drag the handles and get it exactly where I want it. 

Thanks! 

Photoshop 22.3.0
Mac OS 11.2.3

Mac Mini late 2018 / 32 Gigs RAM

[JJMack]

[MdesignAZ]

I see. But how do I get those dialog boxes to come up? I'm only seeing the axis arrows. 

Thanks! 

[JJMack]

Use Photoshop Windows menu to open the palette and use the palette options and settings.

[MdesignAZ]

Got it, many thanks!