Many pump applications spec out cycle timers as well. They're useful in making sure that you're not short cycling your pumps. In aviation, they tend to refer to the hours meter as the "Hobbs Meter" after the most common mfg. That would make them a natural place to look for meters driven off of 12 or 24VDC.
It looks like Iwire is showing you a mechanical version. I don't think that the mechanicals can be typically reset to zero and that some rollover to zero, while others just quit when they max out.
Our subway pump timers are electronic units with non-volatile memory. They have a front reset button that we disabled via a hard to get to switch on the bottom. It is nice to have the option.
Please be advised that I have seen several places where the cycle and hours timers were connected to the high side of the contactor and the control ladder return. This is all well and good unless you happen to trip your OLs and your ladder will still let you call for that pump. The cycle count will increase and the hours will roll up but your pump won't be running. Better to use an aux contact to drive your timers.
Here is just one source for electronic timers http://dkc3.digikey.com/PDF/T053/1629.pdf
DigiKey has a better search engine than most so you can searchon timers and then click on LED or LCD, panel or PCB, desired voltages, Et,c.
[This message has been edited by JoeTestingEngr (edited 12-07-2005).]