Finally got around to buying a rear/auxillary toolpost for my Harrison M300:

Bought on Ebay and arrived today. I’ve cleaned it up, done some fettling and replaced a couple of screws that were supposed to be M6 but definitely were not!
Despite the parting off tool shown I am not sure what I will use the toolpost for; I find parting off is fine from the front. But you can never have too many tools, and if you haven’t got it you cannot plan a job that would make use of it.
Julie