The picture on the left shows the new front tubeplate.  It has been been flanged but not yet drilled.  The right hand picture shows what it will look like after drilling - this is a picture of the old tubeplate.
The picture on the left shows the new front tubeplate. It has been been flanged but not yet drilled. The right hand picture shows what it will look like after drilling - this is a picture of the old tubeplate.
Credit: Dick Bellchambers, 31 August 2005