Hello I need some info hopefully someone here can help out. I acquired a Potter lead hardness tester. Unfortunately it is not complete and is missing the weight that attaches to the balance arm. I am hoping that someone here has one of these units and can help me with the size, weight and composition of the weight. Please PM or reply here if you have one that I can copy. I have the ability to reproduce it but need the specifications. This looks like a really cool tool and Im hoping I can get it back in service. Thanks in advance for any help