Theatre Design & Technology - Spring 1993 - 45

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AngleWright Adiustable
Triangle

angles with an accuracy of +/-0.083°1 That
is twice as accurate as any similar
studio/shop roo Is we've seen.
As an added bonus the manufaerurer
includes tWO pre-cut, adhesive-backed
strips of fine grit sandpaper which you can

by Elbin L. Cleveland

The Construction Master III
by Elbin L. Cleveland

The Construction I\[aster III is a new
hand-held calcularor developed specifically
The AngleWright adjustable triangle is a
for the construction trades by Calculated
heavy-duty rool intended for studio and
Industries, Inc. Despite
shop use. I t is fabricated
its small, shirr-pocket size,
from solid, rool-quality
it is packed with specialaluminum with solid brass
i,~'
ized calculating ability.
fittings. Its flanged conE W -PRO
DUe T
E Y lEW
Here is an abridged list of
struction makes it strong
."~ ~.~
--------the calculations possible
and nearly indestructible.
·~"~t:i}~
on the CM III.
In this age of cheap plastic
and pot metal, it is a pleaI. Add/subtract strings of dimensions in
sure juSt to hold a tool like this which is
apply ro the working surfaces ro prevent
feet/inches, in decimals, or in metric.
made from substantial materials and which
any slippage while using the rool to CUt
2. Converr decimals to/from fractions.
has the heft of old-fashioned "real tools."
acute angles on the saw.
At the risk of waxing roo enthusiastic,
3. Convett metric ro/from English meaIn addition ro quality materials, the
surements.
this is one of the best designed and manurool also exhibits the engineering and man4. Calculate square and reerangular areas.
factured tools we've seen in some time. The
ufacturing attention to detail that separates
5. Calculate cubic volumes.
only potential glitch that we could see was
first-rate equipment from the also-rans. For
6. Calculate circumference and area of cirexample, the working edges have all been
the possibility that the sandpaper might get
cles.
milled ro an accuracy of +/-0.033°; the
curled at one end and reduce accuracy.
7. Solve for right-triangles.
However, even that shouldn't be a problem
knurled brass locking knob is large and
8. Find regular and irregular hip and valeasy to turn by hand, the non-working surif it is carefully applied because the pieces
ley rafters.
faces are finished with baked-on enamel,
of sandpaper are pre-cut slightly smaller
9. Find jack rafters.
than the working surface. That allows for a
and the pans move smoothly and precisely.
10. Calculate stair risers and treads with
small margin of metal all around the paper
The AngleWright can be used directly
"overage/underage" for any given
to protect its edge from wear and abuse.
on a band saw, table saw, or radial arm saw
dimension.
to make miter cutS ar any angle from 0° to
The AngleWright is an outstanding
II. Calculate board feet and unit price.
90°. It can be used to set tilt arbor or tilt tool and should prove ro be very useful in
any scene studio where angled and mitered
12.Estimate rotal number of pieces
table saws, joiner fences, etc. It is even
curs are often required. The company prorequired for a job.
accurate enough ro be used as a drafting
rool on the scene studio drafting table.
vides a one-year guarantee against any
13. Perform all standard math functions,
Both flanges are pre-drilled with four holes
defects in manufacture or materials. The
including percent, square, and square
sized for # I0 screws ro fasten on aluminum
current price plus shipping is about $85.
root.
\Vhile that may seem a lot at first, we
14. Add, subtract, multiply, or divide in
extensions or wooden work boards and
decimals or in fractions to the denomijigs. The locking knob does not protrude
believe that the quality and durability of
this tool make that a very reasonable price.
nator you establish.
beyond the flange so the tool will lay flat
and can be used on either side. It has a speThe AngleWright is American-made and is
The CM III comes with a very readable
cial opening on one side ro facilitate clampavailable from:
manual which simplifies learning the few
ing it to the miter gauge on a table saw or
keystrokes required for any calculation. It
to other items.
AngleWright Tool Co.
also leads the reader through typical calcuOne excellent feature is rhe large,
Box 25632
lations by establishing a problem and then
bright, easily readable quadrant scale. It is
Los Angeles, CA 90025
calibrated in ten-minute intervals along the
solving it step-by-step. While some of these
310-471-7432
outside edge and by twO tenths of a degree
problems have limited application in the
intervals along the inside edge. Those
theatre (such as the number of cubic yards
of backfill required for a
markings and the large red
slope of known grade),
hairline cursor facilitate
most are directly transferprecise settings which are
L BIN CLEVELAND, EDITOR
able to our work.
accurately reproducible.
Both the calculator and
The manufacturer's literamanual are held in a vinyl
ture says that you can set

,)~'N

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TD&T

1993 SPRING

Table of Contents for the Digital Edition of Theatre Design & Technology - Spring 1993