Interesting!

I am in need of a heavy counterweight for my Technics 1210 to counterbalance my very heavy re-bodied Denon 103.

But ... I don't have the means to weigh the thing accurately - all I know is that it takes four 2p pieces blu-tacked together and on to the end of the standard Techie c/w to make it balance!

Any ideas how I can specify and quantify my requirements so Steve knows what to make?