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What kind of device?

Tell me what kind of tools and for what? I found in old things. Will 4 photos, please do not break.





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Source:
Pictures
A caring grandson bought his grandmother a phone that can clear snowdrifts
Oh how I now became Pope
Sale high-tech device
Radex Lupin: When the light is possible to calculate
CES 2017: new year with new gadgets. Innovations and expectations
Chinese Chasofon AN1 Smart Watch
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Budget veloakustika
Video parking sensors in the car 2
Photo excursion to the Museum of the Central Telegraph
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Safety system in an elevator
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Sony Smartwatch 3. Android Wear from Japan
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Brothers in trash
Music vest
The new flagship recording voice recorder Olympus WS-813
Google Glass: release date, specifications, price and partnership with Ray-Ban and Oakley
Baby Gadgets: to surprise, entertain and amuse children from 2+ years
The trick with the camera of the duty-free
...
A caring grandson bought his grandmother a phone that can clear snowdrifts
...
Oh how I now became Pope
...
Sale high-tech device
...
Radex Lupin: When the light is possible to calculate
...
CES 2017: new year with new gadgets. Innovations and expectations
...
Chinese Chasofon AN1 Smart Watch
...
Five interesting gadgets already presented at CES
...
Budget veloakustika
...
Video parking sensors in the car 2
...
Photo excursion to the Museum of the Central Telegraph
...
10 things I have learned to reduce the use of the smartphone
...
Safety system in an elevator
...
Tehnologizatcija sports smart device for professionals and amateurs
...
Refurbished - Electronics restored. Is it worth buying?
...
Sony Smartwatch 3. Android Wear from Japan
...
Smartphone LG G3 and watch LG G Watch: tested on humans
...
Striiv Inc. - 5 years in the market of smart fitness gadgets 5 device in the portfolio
...
Several "smart" devices that are worth paying attention
...
Sentri: home security system for geeks
...
Brothers in trash
...
Music vest
...
The new flagship recording voice recorder Olympus WS-813
...
Google Glass: release date, specifications, price and partnership with Ray-Ban and Oakley
...
Baby Gadgets: to surprise, entertain and amuse children from 2+ years
...
The trick with the camera of the duty-free
 Lenin in Antarctica already '54  Warm place