that is a tub of poo poo. Every Toyota service centre in Pakistan has those tools, I used to get called for these services and it was very laughable when the head mechanic would tell me
aisa meter set andar rakha hai - magar kissi ko nahi pata kaise istemaal hota hai.
trust me they have it, because IMC (Indus Motors Co) actually sold A/T cars in Pakistan and TMC (Japan) has a requirement of such SST (special service tools) to be available in workshops with the toyota brand name.
the gauges are not anything special - just simple pressure gauges with pipes and adapters that thread into the transmission.
however the reverse ocassionally not working and the sudden downshift at high ratio is an indication of either a worn out direct clutch or faulty line pressure regulator (thats why I said for the line test)