Sonin DT220 User Manual

Reference Guide
Professional
Foot / Inch / Fraction
Construction Calculator
SONIN INC.
Phone: 800-223-7511  Website: www.sonin.com
© 2003 Sonin Inc. All Rights Reserved
Printed in China 018-0000-0003 Rev.2
InchMate
®
2000
InchMate
®
2000
Model DT220
INTRODUCTION 3
Key Pad Information 3-11
General Purpose Keys 3-4
Memory Keys 4-5
Other Functions Keys 5-6
Liquid Keys 6-7
Weight Keys 7
Dimension Keys 7-9
Triangle Keys 9-11
GETTING STARTED 12-19
Working with Dimensions and Units 12-13
Addition 12
Subtract 13
Multiply 13
Divide 13
Default Settings 14-15
Reduced Fraction Mode 14
Weight/Volume 14
Construction Settings 15
Conversions 15-17
Linear Conversions 15-16
Area Conversions 16
Volume Conversions 17
Weight Conversions 17
Liquid Conversions 17
Temperature Conversion 17
Paperless Tape Review 18-19
EXAMPLE PROBLEMS 20-35
Complex Area 20
Carpentry Rough Opening 21
Carpentry  Joist Numbers 21
CONTENTS
- 1 -
CONTENTS
- 2 -
Costing a Concrete Walkway 22
Squaring a Foundation 23
Stair  Run Known 23-24
Stairs with Unconventional Risers & Treads 25-26
Raked Wall  Stud Lengths 27
Board Feet Lumber 28
Circle Solutions 28
Simple Concrete Footings 28-29
Concrete Weight/Volume 30
Roof Rise 31
Roof Pitch  Given Rise & Run 32
Regular Hip/Valley & Jack Rafter 32-33
Irregular Hip/Valley & Jack Rafter 34-35
REFERENCE 36-37
Chaining 36
Error/Overflow 36
Auto-Range 36
Care 37
Battery 37
Resetting Your Calculator 37
APPENDIX 38-42
Conversion Tables 38
Area Formulas 39
Volume Formulas 40
Lumber Sizes 41
FCC Statement 42
WARRANTY & REGISTRATION 43-45
Warranty Information 43
Customer Service 44
Warranty Registration 45

Sonin DT220 Specifications

General

Brand	Sonin
Model	DT220
Category	Calculator
Language	English

Summary

Key Pad Information

General Purpose Keys

Explains the basic keys like On/Off and Clear Entry (CE/CLR) functions.

Memory Keys

Details on using memory functions (M+, RCL, CLEAR MEMORY) for calculations.

Other Functions Keys

Covers keys like Percent (%), Square (X2), Square Root (√), Cost, Restore Defaults, and Pi (π).

Triangle Keys

Explains keys for calculating pitch, angle, rise, run, and diagonal for triangles.

Getting Started

Working with Dimensions and Units

Explains how to enter dimensional values and handle mixed units in calculations.

Construction Settings

Explains default values for stair height, tread width, and on-center spacing.

Example Problems

Complex Area

Costing a Concrete Walkway

Squaring a Foundation

Stair - Run Known

Building a stairway with a known run and floor-floor height.

Stairs with Unconventional Risers & Treads

Calculating stairway dimensions for shorter risers and wider treads.

Raked Wall - Stud Lengths

Board Feet Lumber

Roof Rise

Roof Pitch - Given Rise & Run

Regular Hip/Valley & Jack Rafter

Calculating common, hip/valley, and jack rafters for perpendicular roofs.

Irregular Hip/Valley & Jack Rafter

Calculating rafters for roofs with different pitches meeting at an angle.

Reference

Chaining

Explains how to perform successive operations using the '=' key.

Error/Overflow

Describes conditions causing error messages and how to clear them.

Resetting Your Calculator

Steps to reset the calculator to its default factory settings.

Appendix