19-12-2012, 04:26 PM
![[Image: 20121219_161617.jpg]](http://i817.photobucket.com/albums/zz92/tomw1123/20121219_161617.jpg)
The 2 black square boxes in the centre of the picture. What are they? I think the top one is broke but without knowing what they are or do im just basing that on the difference between readings compared to the other. Cheers

Doesnt even own a 306.