What is it?

[AdmiralAdama]

This has to be attached for it to work.
AA

 

[AdmiralAdama]

The device in the first image shown transmits a signal. Here's a different view.
AA

 

[scifan57]

It's a wireless microphone system that transmits on UHF frequencies.

 

[AdmiralAdama]

It is.
Over to you scifan.
AA

 

[scifan57]

What is this?How is it used?

 

[scifan57]

Here's another photo.

 

[scifan57]

If you solve this challenge,you will be able to unscrew the inscrutable.

 

[AdmiralAdama]

Hmmm.
I'm going to guess that you are the proud owner of a Velocette motorcycle. The image you've furnished is a tool for it.
The only question is what beast do you have?MSS, VIPER, VENOM, SCRAMBLER, ENDURANCE, CLUBMAN, THRUXTON.

Velocette's were made by Veloce Ltd, in Hall Green, Birmingham. England, 1904 - 1971.

AA

 

[scifan57]

It's not a tool for a Velocette motorcycle,but it's used in the same manner.It's part of a set of various sizes of which this is the largest,3/8" size.
Here's a photo of the whole tool.

 

[scifan57]

This tool operates by turning it after placing it in the proper location.

 

[hpulmer]

Hex ley, allen key or allen wrench

 

[scifan57]

Hex ley, allen key or allen wrench

Correct,hpulmer.It's a T handled hex key.
Over to you now.

 

[hpulmer]

Looks like it took a long time for such an easy item... So here another easy one (?)




What is it used for?
Brand name?

Edit: it is not easy, so here are some hints:
Designed (originally) in Europe, company founded in 1932 by a Carpenter.
This stuff comes in different colours, shapes and sizes.

 

[scifan57]

How large is this item?

 

[hpulmer]

How large is this item?

This specific item about 1 cm high (3/8 inch?)