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April 2003 - Levelling the Field |
| Is
new technology bursting the bubble vial? |
It’s
an old rule of thumb that woodworkers need a variety of levels
in their toolboxes. These days, there’s a lot of variety
to choose from, including newer laser and electronic technology,
and new combinations of levels with other tools. But those who
favour the old-fashioned, low-tech elegance of a simple bubble
vial can take heart: bubble-vial levels remain the most economical
choice.
Some level tips: extend the length
of a short level by stacking it on the edge of a good, longer
straightedge. Check a new—even a newfangled—level
when you buy it and as you use it. Put it on a flat surface
and mark its position. If it doesn’t indicate level, shim
up one end, then flip the level end for end, and flip it upside
down—it should indicate level in each position. If not,
you can usually adjust the bubble vials, or recalibrate the
electronics.
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Here’s a measure of levels, some familiar, some more unusual.
[1]
Beam level: a toolbox classic, this one from Stabila ($100),
useful for checking level and plumb. Its 48" length means
it’s a handy straightedge.
[2]
Level with bevel gauge: this Bosch model ($208) combines a bevel
gauge with an electronic level, and calculates angles for compound
mitre cuts.
[3]
Torpedo level: a short level that fits in tight spots. This
Zircon model ($300) is electronic, and also projects a laser
beam—useless for zapping aliens or do-it-yourself surgery,
but great for checking level over longer distances.
[4] Laser
level with stud finder: laser beams project from both sides
of an electronic stud finder to make hanging pictures easy.
From Black & Decker ($120).
[5]
Electronic torpedo level: this Zircon model ($55) is magnetic
so it sticks to plumbing or metal framing.
[6]
Torpedo level: a simple, bubble-vial model from Stabila ($30),
this one has an adjustable vial for measuring angled surfaces.
[7] Square
level: from Veritas ($26), a small level that holds two metal
rulers to form a square. It can also simply be attached to a
metal square.
—Martin Zibauer, photo by Daniel Harrison
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