<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=iso-8859-1" = http-equiv=Content-Type> <META content="MSHTML 5.00.2614.3500" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face="Courier New" size=2>Thanks to Keith McGavern, = Daniel Jackson, Roger Jolly, Rob Thornton, Bill Ballard and Newton Hunt .</FONT></DIV> <DIV><FONT face="Courier New" size=2>I would like to know = the John Hartman's trick of weighing the<BR>> hammer heads with small brass = clips. I think that was published before I receive the Journal and I really need = to calibrate the tension of the springs on my own August Foster = Grand.</FONT></DIV> <DIV><FONT face="Courier New" size=2>There are some jig that I put = over the wippen in order to measure the weight that it supports? I think that = would be the best way to measure the tension of the springs but I only think...</FONT></DIV> <DIV><FONT face="Courier New" size=2>Thanks to all</FONT></DIV> <DIV><FONT face="Courier New" size=2>Rogerio Cunha<BR>IC Member of = the Guild<BR><A href="mailto:rogeriocunha@openlink.com.br">rogeriocunha@openlink.com.br= </A><BR><A href="mailto:rogerio@airandinas.com">rogerio@airandinas.com</A></FONT><= /DIV> <DIV><FONT face="Courier New" = size=2> </DIV></FONT></BODY></HTML>