Sonin DT220 - Triangle Keys

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EXAMPLE PROBLEMS
Operation: Enter Nominal Riser Height
Enter:
RiseInch / 27 1 2ND
Display: R-HT 7 1/2 INCH
Operation: Find Number of Risers
Enter:
Rise
2ND
Display: RSRS 33.
Operation: Find Actual Riser Height
Enter:
Rise
Display: R-AH 7 1/2 INCH
Operation: Find Underage/Overage of Risers
Enter:
Rise
Display: R+ / - 1 INCH
Operation: Find Number of Treads
Enter:
Rise
Display: TRDS 32.
Operation: Find Tread Width
Enter:
Rise
Display: T-WD 8 7/16 INCH
Operation: Find Underage/Overage of Treads
Enter:
Rise
Display: T+ / - 0 3/4 INCH
Operation: Find Stringer Length
Enter:
Rise
Display: STRG 30 Ft - 0 1/64 INCH
Operation: Find Incline
Enter:
Rise
Display: INC° 41.59389°
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EXAMPLE PROBLEMS
Stairs with Unconventional Risers & Treads
Build an entryway where your rise is 3' and you require
shorter risers (5") and wider treads (3') for physically
challenged user.
Operation: Reset
Enter:
CE/CLR CE/CLR
Display: 0.
Operation: Enter Height
Enter:
RiseFeet3
Display: RISE 3 Ft - 0 INCH
Operation: Enter Riser Height
Enter:
RiseInch5 2ND
Display: R-HT 5 INCH
Operation: Enter Tread Width
Enter:
RunFeet3 2ND
Display: T-WD 3 Ft - 0 INCH
Operation: Find Number of Risers
Enter:
Rise2ND
Display: RSRS 7.
Operation: Find Height of Risers
Enter:
Rise
Display: R-AH 5 1/8 INCH
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EXAMPLE PROBLEMS
Operation: Find Overage/Under
Enter:
Rise
Display: R+ / -  0 1/8 INCH
Operation: Find Number of Treads
Enter:
Rise
Display: TRDS 6.
Operation: Find Width of Treads
Enter:
Rise
Display: T-WD 3 Ft - 0 INCH
Operation: Find Overage/Underage
Enter:
Rise
Display: T+ / - 0 Ft - 0 INCH
Operation: Find Run Required
Enter:
Rise
Display: RUN 18 Ft - 0 INCH
Operation: Find Stringer Length
Enter:
Rise
Display: STRG 18 Ft - 2 13/64 INCH
Operation: Find Inclination
Enter:
Rise
Display: INC° 8.134744°