Privacy Technology Course

Measurements

In a previous version of the course, students used a ruler to draw straight lines between the anchor points noted. Then, they used a ruler to measure (in tenths of an inch), the length of the noted line. More information on each measurement appears after the samples. In this project, you will want to compute these using the image process program.

Below are examples for Alice. Click on image to view enlargement.

Below are examples for Bob.

Below is specific information on each measurement.

GROUP I: FINGERS AND WRIST
• Measurement 1. Wrist size.
  Measure the smallest line that can be drawn across the wrist area in the tracing. See example for Alice.

• Measurement 2. Thumb length.
  First, draw a base line across the bottom of the thumb. The base line extends from the join of the thumb to the palm. Second, draw the longest line that appears perpendicular to the base line. Measure the length of the second line drawn. This line approximates the length of the bones of the thumb. See example for Alice.

• Measurement 3. Pointer finger length.
  First, draw a base line across the bottom of the pointer finger. The base line extends from the join of the finger to the palm. Second, draw the longest line that appears perpendicular to the base line. Measure the length of the second line drawn. This line approximates the length of the bones of the finger. See example for Alice.

• Measurement 4. Middle finger length.
  First, draw a base line across the bottom of the middle finger. The base line extends from the join of the finger to the palm. Second, draw the longest line that appears perpendicular to the base line. Measure the length of the second line drawn. This line approximates the length of the bones of the finger. See example for Alice.

• Measurement 5. Ring finger length.
  First, draw a base line across the bottom of the traditional "ring" finger. The base line extends from the join of the finger to the palm. Second, draw the longest line that appears perpendicular to the base line. Measure the length of the second line drawn. This line approximates the length of the bones of the finger. See example for Alice.

• Measurement 6. Little finger length.
  First, draw a base line across the bottom of the little finger. The base line extends from the join of the finger to the palm. Second, draw the longest line that appears perpendicular to the base line. Measure the length of the second line drawn. This line approximates the length of the bones of the finger. See example for Alice.

GROUP II: PALM SIZE

• Measurement 7. Palm base.
  Draw a line across the base of the palm. One end of the line is immediately below the outer curve of the non-thumb side of the drawing. The other end of the line is immediately below the thumb. Measure the length of this line. This line appears across the location where the bones of the wrist would occur, just as the wrist joins the palm. See example for Alice.

• Measurement 8. Palm length across thumb.
  Draw a line: (a) from the base of the palm below the thumb; (b) to the base of the pointer finger. Measure the length of this line. See example for Alice.

• Measurement 9. Palm width across fingers.
  Draw a line: (a) from the base of the pointer finger; (b) to outer end of the base of the little finger. Measure the length of this line. See example for Alice.

• Measurement 10. Palm length on outer edge.
  Draw a line: (a) from the base of the little finger; (b) to the base of the palm on the side of the palm that does not have the thumb. Measure the length of this line. See example for Alice.

• Measurement 11. Palm width.
  Draw a line: (a) from the space between the thumb and pointer finger; (b) to the widest part of the outer edge of the palm. Measure the length of this line. See example for Alice.

GROUP III: PALM-TO-FINGER LOCATIONS

• Measurement 12. Palm base to pointer-middle finger join.
  Draw a line: (a) from the base of the palm, which is immediately below the outer curve of the non-thumb side of the drawing; (b) to lowest part of the curve between the pointer and middle fingers. Measure the length of this line. See example for Alice.

• Measurement 13. Palm base to middle-ring finger join.
  Draw a line: (a) from the base of the palm, which is immediately below the outer curve of the non-thumb side of the drawing; (b) to lowest part of the curve between the middle and ring fingers. Measure the length of this line. See example for Alice.

• Measurement 14. Palm base to ring-little finger join.
  Draw a line: (a) from the base of the palm, which is immediately below the outer curve of the non-thumb side of the drawing; (b) to lowest part of the curve between the ring and little fingers. Measure the length of this line. See example for Alice.

• Measurement 15. Palm base to thumb-pointer finger join.
  Draw a line: (a) from the base of the palm, which is immediately below the outer curve of the non-thumb side of the drawing; (b) to lowest, most indented part of the curve between the thumb and pointer finger. Measure the length of this line. See example for Alice.

Example. Here is an example of how a measurement can be done using the image processing software provided.