why there is a difference between two STAB TRIM indicators?

[eagle737]

i noticed there is a difference between two STAB TRIM indicators in most of B737-300,left one indicate about 0.3-0.5 more unit than right one,anyone can tell me why?thanks!

[Bus429]

Just hope that your take-off configuration warning works when it should!

[Flight Detent]

Yeah,
It's the same in all Boeings, no sweat, it's normal!!:cool: