Most of you who own a boat will know 'levels' are quite important. Not the spirit type levels but levels of 'consumables', specifically:
Power is critical on boats. the best bit of kit I installed on Waterlily was a Smartgauge.
Water is quite obviously the essential of life and comfortable living. I latterly fitted a water tank gauge on Waterlily that is now an essential, so this will be fitted asap...the plastic pipe that is used on Percy will make this easier as is the access.
Diesel is easier as there is are two access bolts to dip the two tanks plus a less than effective sight glass.
A final 'level' indicator is the engine hours, useful for fuel use, after you have determined what the consumption is per hour, and servicing intervals. I have one on order from Ebay...
Buying is one thing... fitting is the next !