UK What is this?

[onion50]

Someone please tell me what this is.

 

[telectrix]

paint it in 3 different fluorescent colours and put a £7million price tag on it.

 

[mjb]

After over 40 years in power distribution with a DNO ,I know what a wall box is and what 16mm is.

 

[westward10]

After over 40 years in power distribution with a DNO ,I know what a wall box is and what 16mm is.

Unless it has multiple layers of insulation I would guess at 35mm minimum, compare it to the mortar between the brickwork.

 

[Pete999]

After over 40 years in power distribution with a DNO ,I know what a wall box is and what 16mm is.

Well go on then if you really know please tell all.

 

[telectrix]

Unless it has multiple layers of insulation I would guess at 35mm minimum, compare it to the mortar between the brickwork.

but mortar could be anything from 1/8" to 1/2".