In rec.crafts.metalworking Don wrote:
I am wanting to have built or to build a pole barn garage about 30x30.
I have been working the ground with a power tiller and a tractor. It
is alot more level than it was but still has some low spots. Is there
a good way to ensure this is level?

Is there anything out there not too expensive that I could make or buy
that would help me get this as level as possible? (Short of buying a
200 buck transit). WOuld a laser level on a pole work?

A floodlight, on a small pole can be handy in revealing low-spots.
Best results at night.
Laser level can also be useful for fine-tuning.