On Wed, 28 Sep 2005 09:14:41 -0700, RicodJour wrote:

Reed wrote:
RicodJour wrote:

seniorgeezer wrote:
If you look at a long level there are usually two "bubbles", side by
side ... one concave up and the other concave down. I have always read
the one that is concave up in any application. No one at Home Depot or
Lowes home improvement stores seems to know the difference. Would you
please explain the difference, and which to use?

One is for use in the northern hemisphere and the other for use in the
southern. Do _not_ confuse the two or you'll find your building is
negatively level.

R

Does this mean you need to read both vials on the Equator or at
the Poles ??

Now you're being silly. The Equator is essentially self-leveling since
everything runs uphill from there. It might look different on a globe,
but it's really at the bottom of a trough.

Nope. Antarctica is really on the bottom. Why do you think the ozone
hole is there. It's all floated up to the top. You never hear of a ozone
hole over Canuckistan!

The poles as expected are
just the opposite - you just have to worry about plumb. If you don't
believe me, just take a look at an Eskimo's igloo. That's what happens
when you try to find level at one of the poles.

It's easy to level one at the equator.

--
Keith