Johnson CALC-1500 User Manual

© 2022 Johnson Level & Tool — 4
GETTING STARTED
RIGHT TRIANGLE/ROOF FRAMING KEYS
Pitch Key: This key is used to enter or
calculate the Pitch (Slope) of a roof (or Right
Triangle). Pitch is the amount of “Rise” over
12 Inches of “Run.” Pitch may be entered as:
a Dimension
8
Inch Pitch
an Angle
3 0
Pitch
a Ratio
0 • 7 5
Conv Pitch
a Percentage
7 5
% Pitch
A Pitch entry will remain in permanent storage until
revised or reset. A solution will be replaced by its entered
value once the calculator is cleared.
Enters Pitch Ratio (e.g.,
• 5 8 3
Conv Pitch
).
Rise Key: Enters or calculates the Rise or
vertical leg (height) of a Right Triangle.
Run Key: Enters or calculates the Run or
horizontal leg (base) of a Right Triangle.
Diagonal Key: Enters or calculates the
common or Diagonal leg (Hypotenuse) of
a Right Triangle. Typical applications are
“squaring” slabs or finding common
rafter lengths.
Hip/Valley Key: Calculates length of the
Regular or Irregular Hip/Valley rafter.
Pitch
Rise
Run
Diag
Hip/V
Conv Pitch

Johnson CALC-1500 Specifications

General

Brand	Johnson
Model	CALC-1500
Category	Calculator
Language	English