What is this?

[casportpony]

It's from the 1970s.

Before my time. Hint?

 

[CarpCharacin]

Before my time. Hint?

Before my time too, but I know what it is. I posted the dimensions earlier.

 

[casportpony]

Before my time too, but I know what it is. I posted the dimensions earlier.

I need a hint other than size.

 

[CarpCharacin]

I need a hint other than size.

It is removable.

 

[casportpony]

It is removable.

You're killing me.

 

[CarpCharacin]

You're killing me.

I don't want to give away the answer. Something attaches to the metal piece on top.

 

[casportpony]

Well I will wait until there are more hints.

 

[CarpCharacin]

Okay, here's a hint. It has a spring, and it's a moving part.

 

[Cyprus]

I have something.
View attachment 1753322

Broken keyboard key

 

[CarpCharacin]

Broken keyboard key

It's not a key, and it's not broken.