Presentation 1: MEASUREMENT

Measurement Systems English System Metric System English System uses yards, feet, inches, and fractions. Metric System uses meters, decimeters, centimeters, and millimeters.

Metric System Based on the number 10. Smallest lines are millimeters. Arrow is pointing to ? 128 millimeters

Metric System Millimeters are usually the smaller lines. 10 millimeters = 1 centimeter 10 centimeters = 1 decimeter 10 decimeters = 1 meter 1000 meters = 1 kilometer

English System Based on feet and inches with fractional increments. Every inch is typically broken into 16 parts or sixteenths. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 16 ths

Fractional Inches First, each inch is broken in half. Then each of those sections are halved. Eighths Quarters Sixteenths Halves 1 16 ths

Fractional Inches Each 16th increment has a name. 1/8 1/4 3/8 1/2 5/8 3/4 7/8 1 2/16 4/16 6/16 8/16 10/16 12/16 14/16 16/16 1/16 3/16 5/16 7/16 9/16 11/16 13/16 15/16 1 2 3 4 5 6 7 8 9 10 11 12 13 15 16 14 16 ths

English System Tape measures have helpful color-coded numbers for easier layout. Every foot is highlighted with a black symbol. Every 16-inch increment is boxed in red

English System Red numbers relate to foot markings to the left. e.g., 15 inches is also 1′- 3″. Black triangles, at increments of 19.2 inches, are used in a similar fashion as the red 16-inch marks in layout work.

Conclusions A = ? A = 37 1/4″ A = 3’– 1 ¼″ B = ? B = 36 9/16″ What are the following measurement lines called? A = ? A = 37 1/4″ A = 3’– 1 ¼″ B A C B = ? B = 36 9/16″ B = 3’– 9/16″ C = ? C = 37 13/16″ C = 3’– 1 13/16″

Conclusions Read the following with only a short viewing time. Ready? 14 3/8″ 16 7/8″

Conclusions Read the following with only a shorter viewing time. Ready? 13 7/16″ 17 13/16″