For the Canucks among us, CAR 605.14 says, in part:

"DIVISION II - AIRCRAFT EQUIPMENT REQUIREMENTS
Power-driven Aircraft - Day VFR

"605.14 No person shall conduct a take-off in a power-driven aircraft
for the purpose of day VFR flight unless it is equipped with

"(j) a means for the flight crew, when seated at the flight controls to
determine

"(i) the fuel quantity in each main fuel tank..."

An inaccurate (never mind busted) fuel gauge can't do that. It
can be fun getting the gauges on some airplanes to read anywhere near
accurately. Even replacing gauges or senders or both will often not get
them any more accurate.

Dan