Fuel tank sensor and dial - non linear?

[Pitts]

My old Swanson doesn't have a fuel gauge, unless you call the wooden stick a gauge. My diesel fuel tank is under the stern quarter Berth and shaped to the hull. What sort of electronic gauge could I get that would come close to indicating real fuel in tank as opposed to a linear gauge with float registering a falling level but not accounting for the hull shape?
Thanks in advance for your responses
Pitts

[sstuller]

Use your dip stick as a fuel gauge. As an example, if you had a 20 gallon tank assuming it is empty, add five gallons at a time. Then mark the dipstick for every 5 gallons you add. A dipstick is still the most reliable fuel gauge on the planet.

[bletso]

Tank Tender. Hart Systems - Home

I used a dip stick as well, but I had to lift a cabin sole to gain access. Now I can monitor my fuel and water tanks from the same device. A bit pricey, but very accurate. It was also very easy to install requiring no electrics!

[Pitts]

Thanks Sstuller and Bletso but what device did you use?

[sstuller]

I've always used a wooden dowel. They are available in various diameters and lengths for a couple of dollars at your local hardware or home improvement store. Thanks.

[Pitts]

The Hart system looks clever, but you're right, a tad pricey, particularly if you have 5 tanks.

[Stu Jackson]

1. Determine your engine's fuel consumption.

2. Use your hour meter to determine remaining fuel.