The Right Size for your Surveillance Mirror
Surveillance mirrors are a convenient way to view hard-to-see areas and shopping trolleys in the checkout area. In addition, potential shoplifters are deterrred from stealing because they already feel they are being watched simply by installing these security mirrors.
The mirrors have a deterrent effect on would-be thieves. To determine the correct mirror diameter, the distance of the person monitoring to the mirror and the distance of the object to be monitored to the mirror are decisive. If you add both distances, you can read off the appropriate mirror diameter from the table.