Solid brass, 5 x 5 x 2cm. Central hole 13mm in diam. running from top to bottom, holes on all 4 sides -2 of which accomodate screws that when turned decrease size of central hole. One side of the block has an extra hole that can be plugged with a metal plug ,protruding from which is a 2cm wire rod. Weight = 490.64g
I have a photo of this on my IPAD, am I allowed to post it on this forum?
Help please, having unidentifiable equipment really gets my goat.
![Anxious 8-[](./images/smilies/eusa_shifty.gif)