|
|
|
|
|
|
Versatile inspection mirror
In the covert and espionage trade,
small mirrors are often used to inspect areas
that are difficult to reach, for example inside or behind a piece of furniture.
Inspection mirrors provide a good way for looking around a corner, in the same
way as a dentist does when inspecting a patient's teeth.
|
Inspection mirrors, or mirror probes, come in many flavours,
in various sizes and diameters, but the most common one consists
of a small circular mirror on a short stick. They can be used to look around a corner when repairing a
piece of equipment, but can also be useful, e.g. when searching for
covert listening devices (bugs).
The image on the right shows a versatile mirror probe kit with 3
different sizes of mirrors with extensible sticks and a built-in
tourch light, as it was used
by the State Security (MfS, Stasi)
of the former DDR (East-Germany)
during the Cold War.
|
|
|
The diagram below shows the contents of the leather wallet.
There are three stick segments, of which one
holds the light bulb at the end.
This allows the stick to be made 25, 45 or 65 cm long. Each segment has
a contact wire at its core,
much like a rigid coaxial cable, through which
the current is passed from the
battery in the blue grip
to the light bulb
at the mirror-end of the stick.
The light bulb is lit as long as the
white button at the side of the battery holder
is depressed. The lamp is powered by a 3V 2R10-size battery 1 that
should be installed inside the blue grip. It is 74.6 mm long and has a
diameter of 21.8 mm.
Although these batteries are less common today than
they were in the 1960s and 70s, they are still available from a number of
brands (2018) [1].
|
-
Also known as a Mallory No. 8 battery, or duplex battery.
|
|
|
|
Any links shown in red are currently unavailable.
If you like the information on this website, why not make a donation?
© Crypto Museum. Created: Monday 08 October 2018. Last changed: Saturday, 13 October 2018 - 10:09 CET.
|
 |
|
|
|
