positional relationship across a plate

[manky]

I want to clearly describe a positional relationship between a cyrinder and a cube shown in an attached file.

This is my draft.
The cyrinder is placed on a first portion of a front surface of a plate.
The cube is attached to a second portion of a back surface of the board.
The first portion is opposite to the second portion.

Please advise me.

[MrPedantic]

Hello Manky

You can make it a lot simpler:

The cylinder is placed on top of the plate.
The cube is attached underneath the plate, directly beneath the cylinder.

All the best,

MrP

[RonBee]

Is it a diffrence between "underneath" & "beneath"

All the best

Say:

Is there a difference between underneath and beneath?