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Field Manual 3-34.331 TOPOGRAPHIC SURVEYING 16 January 2001

TOC Chap1 2 3 4 5 6 7 8 9 10 11 AppA AppB AppC AppD Gl Bib

 

Appendix A

Mensural Conversion Charts

This appendix complies with current army directives, which state that the metric system will be incorporated into all new publications. Table A-1 is a metric conversion chart and Table A-2 shows conversion factors for temperature, angles, and time.

Table A-1. Metric Conversion Chart

US Units

Multiplied By

Equals
Metric Units

Metric Units

Multiplied By

Equals
US Units

Length

Inches

2.5400

Centimeters

Centimeters

0.39370

Inches

Inches

25.4001

Millimeters

Millimeters

0.03937

Inches

Feet

0.3048

Meters

Meters

3.28080

Feet

Yards

0.9144

Meters

Meters

1.09360

Yards

Miles

1.6093

Kilometers

Kilometers

0.62140

Miles

Miles, Nautical

1.8532

Kilometers

Kilometers

0.53960

Miles, Nautical

Area

Square miles

2.590

Square kilometers

Square kilometers

0.38500

Square miles

Volume

Gallons

3.7854

Liters

Liters

0.26420

Gallons

Mass (Weight)

Pounds

0.4536

Kilograms

Kilograms

2.20460

Pounds

 

Table A-2. Temperature, Angle, and Time Conversion Chart

Units

Multiplied By

Equals

Units

Multiplied By

Equals

Temperature

Degrees (F) - 32

0.5556

Degrees (C)

Degrees (C) + 17.8

1.8000

Degrees (F)

Angle

Degrees (angular)

17.7778

Mils

Mils

0.0562

Degrees (angular)

Time

Seconds

0.001

Milliseconds

Milliseconds

1,000

Seconds

Seconds

0.000000001

Nanoseconds

Nanoseconds

1,000,000,000

Seconds