I assume that we are talking about Sir Charley Parsons, inventor of the first practical Reaction turbine, as opposed to Curtiss who invented the first practical Impulse turbine, or Heros who invented a steam toy in ancient Roman times.
Therefore I assume that you would require 4 Vernier gauges to lift the top casing off the turbine without fouling the blades, one to measure the lift at each corner). The multiplicity of bolts to which you alluded earlier, being the bolts securing the top casing to the bottom casing.
So I assume the white Metal Kidney pads are the thrust bearings for the turbine. ( I remember reading that Sir frank Whittle had a problem with his early Jet Engines, they kept blowing up, but they were too "Top Secret" for the Air Ministry to allow him to talk to outsiders about the problem. Eventually they allowed him to talk to the steam Turbine experts at the admiralty who showed him that he had miscalculated the direction of the thrust in his jet engine, and advised him to fit the thrust bearing the other way round. Problem solved!)
I remember on the only steam Turbine ship that I sailed on back in 1973, that there was a mechanism to jack the rotating shaft forward at full load to reduce the Blade Tip clearances and increase the efficiency. When manoeuvring at low power, the increased tip clearance reduced the risk of contact due to unequal expansion of the rotor and casing, and the loss of efficiency was acceptable for short periods.
So I can see "Ts" for Turbine, Thrust and Tip Clearance, but I don't see where the 4th T comes from, unless it is Time?
Nor can I imagine the phrase combining them all.
Can anyone else save the site's reputation for never being stumped?
It is always better to ask a stupid question than to do a stupid thing.