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8 — C
ONSTRUCTION
M
ASTER
®
P
RO
/ T
RIG
/ D
ESKTOP
Column/Cone Function
The Column and Cone function helps you quickly estimate volume
and surface area of columns or cones.
Ç C
Column and Cone (Column/Cone)
— With an
entered diameter and height, the first and second
presses of C (following Ç) will calculate the
total volume and surface area of a
Column
; the third
and fourth consecutive presses of C calculate the
total volume and surface area of a
Cone
.
For Trig Model (#4080) Users:
As this model does not have a
h
key, you must enter the height using the
r
key.
Compound Miter/Crown Moulding Keys
The
Construction Master Pro
also calculates compound miter cut
angle solutions for cutting and installing crown moulding on a wall.
The Compound Miter function can also be used for finding angle
cuts for many types of compound miter problems, such as siding,
railing and trim.
Â
Compound Miter
— With stored spring (crown)
angle and entered wall corner angle*, consecutive
presses of  will calculate the following:
Press Result
1 Miter Angle (MITR)
2 Bevel Angle (BEVL)
3 Redisplays Stored Spring Angle (SPRG)
4 Redisplays Entered Wall Corner Angle (CRNR)
* Wall Corner Angle entries of less than 25 into
Â
will be
assumed to be the number of sides of a polygon; in this case, the
calculator will calculate the unknown Wall Corner Angle first, then
proceed with the above angle calculations.
ß Â
Store Spring Angle (Spring Angle)
— Stores a
value
other than the default spring (crown) angle of
45°
(e.g., 3 8 ß Â stores 38° spring angle).
This value is permanently stored until you change it
or perform a
Clear All
(Ç x). To recall the stored
setting, press ® Â.
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