Guess what this is

[SailorMoon]

im going since no one else has...

[Fern]

funja you're right, just on little thing need to be added, who's the user?

Edit: I think I give away the rest: it's for dogs.

[funja]

isnt it a flotation belt when you hit the water it inflates

[ahra]

the only thing that comes to mind right now is a floaty arm thingie

[Fern]

Yay.

Next one:

[ahra]

yep, a battery from 1320. good job

[Fern]

A Leclanché cell-type battery I think.

[ahra]

wow. how do i keep guessing things when i don't have one for the turn? uh.

anyway, here you go:

[Fern]

Yes you got it, the thing for bones.
It's name is Ilizarov device first invented for lengthening limbs. Genial, and is so simple at the same time.

[ahra]

is that some of those things used for broken legs and whatnot? i don't know the name. but smth to do with medical purposes?

[Fern]

I was just lucky enough to find the original picture.

Next one:

[ahra]

omg fern. you are good

in short, it's a tiny robot, autonomous, usually used in swarm intelligence control systems. it actually fits in the palm of my hand and i like playing with the little buggers.

click for example.

[Fern]

After throughout research I dare to say that this is a 360-degree video camera with conical mirror, on the top of a first generation Khepera mobile robot, used in a biological cybernetics project of Max Planck Institut. *shiver*

[ahra]

not a light, not a camera.

but one can hold it easily in one's hand.

[nooter mcdurt]

some sort of light, or is it a camera?