This is the power hammer I use in my forging work. It is a wonderful old machine and for it’s age is still reasonably accurate.
It is an English made ” Massey ” and is one of three machines imported in 1927 by the government of the day for the railways. One of these went to Christchurch, one to Wellington and the other to Otahuhu in Auckland and that would be this one.
Being an Air hammer it has a lot of control in its operation.
I had to do quite alot of restoration to this and it was a significant job to install it.