The following are ranks of PSP :-
1. IGP BS-22 eq. to Lt. General
2. Additional IGP BS-21 eq to Major-General
3. DIG BS-20 eq to Brigadier
4. SSP/AIG BS-19 equaivalent to Colonel
5.SP with 14 years service bs-18 eq to Lt.colonel
6.Sp with 6 to 13 years service bs-18 equivalent to Major
5. ASP Bs-17 eq. to Captain but according to tradition wears the rank of a Lt. In case of not being promoted on the 6th year to the rank of SP, an ASP wears rank of Captain. Moreover, if An ASP is sent on deputation to FC, he wears the ranks of a Captain i.e 3 Stars.
Additional IG, AIG and SSP are appointments
IG, DIG, SP and ASP are ranks.