Thanks, that did it..just used my fingers and twisted counter-clock wise..No show with the SOkkia diagonal eyepiece, it is a screw on type while the L...

> Here's a link to the SurvKap catalogue with examples of what they call pipe sizers that simultaneously protect the top of the pipe and keep the i...

> Another very good tool to have is a drive cap for pipe that can be laid over the top end of the pipe as it is hammered. Various companies sell th...

> > The top of the pipe was badly deformed by driving, splitting and starting to "blossom" into petals of pipe wall, some of which later broke o...

Is it an optical illusion or the disk/cap is really slightly off from the actual centre of the pipe?