Gauge or sender question

[Kquaine]

I was looking at my transmission pressure gauges and noticed that the gauges do not match up side to side or lower helm to upper helm. Any ideas if the problem is related to the pressure sender or the gauges?Thanks

 

[bigbill]

both of my hatteras's had mechanical gauges, check for a hose going to the back of the gauge. if there is one it is probably the gauge that is off. sorry, if they are electric i cant help

 

[SEVEN]

99.9@ it’s the gauges. Install a mechanical gauge directly to the transmission and leave it in the engine room. One of mine read 120 Well, the other was 200. I installed mechanicals and they both read 120 in the engine rooms. I was lucky enough to find a sending unit and change that out and now all gauges read 120.