© 2022 Johnson Level & Tool — 5
GETTING STARTED
Irregular Pitch: Enters Irregular Pitch
used to calculate lengths of the
Irregular Hip/Valley and Jack rafters.
Jack Key: Calculates Jack rafter lengths on
the Regular-pitched roof side.
Irregular Jack: Calculates Jack rafter
lengths on the Irregular-pitched
roof side.
Rake-Wall Key: Finds the stud sizes based
on entered Right Triangle values and the
stored On-Center spacing. If a dimensional
value is entered before pressing
R/Wall
,
that value is considered the base and will be
added to the stud lengths.
Hip/V
R/Wall
Jack
Conv
Conv
Jack
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