New screws for the TOKAI HIT chamber holder

The screws of the Tokai hit chamber holder did not tighten well anymore. Focus shifts occurred when accurate imaging was required on live cells. It was already tedious to unscrew and rescrew the adapters for the different chambers and this has only become more cumbersome, unfortunately. We need to fasten the new screws and tighten them with the nuts below the stage while manoeuvring between the objectives, better done by slim finger persons. It works for now but we will improve this. If you ideas to make it easier, please inform the staff.