you dont use a test meter to check earth bonding,
or cross bonding,what you do use is an earth impedence meter,we use this to check the entire earth system in the house,the lower the reading ,the better,0.8ohm is very good.earth bonding is the connection from the db to the gas or water pipe feed from outside,cross bonding is where you link the pipes together,like under your sink,boiler,etc,also if you get a new db fitted,you need to get a P.I.R.done on the electrical system,and a certificate obtained,
mm, February 2011