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Bone Measurement “How To” Guide. 2 ways to measure bones Measure lengths and widths Measure angles.

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Presentation on theme: "Bone Measurement “How To” Guide. 2 ways to measure bones Measure lengths and widths Measure angles."— Presentation transcript:

1 Bone Measurement “How To” Guide

2 2 ways to measure bones Measure lengths and widths Measure angles

3 Inside Measurement Nasal Width Measure at widest spot Measuring with Calipers – inside measurements place calipers inside space spread out until touch both edges of object read bottom row labeled ‘inside’

4 First # is where 0 lines up. = 40 Second # is the first spot bottom and top lines match up. Read as a decimal. =.1 Measurement 40.1 mm Reading Calipers: Inside Measurement

5 You try… What is the inside measurement reading? Answer: 35.1mm

6 Outside Measurement Nasal Height Nasion to Nasal Spine Measuring with Calipers – outside measurements place calipers on outside of area bring in until touch both edges of object read top row labeled ‘outside’ Nasion Nasal spine

7 First # is where 0 lines up. = 40 Second # is the first spot bottom and top lines match up. Read as a decimal. =.1 Measurement 40.1 mm Reading Calipers: Outside measurement

8 You try… What is the outside measurement reading? Answer: 10.1mm

9 Measurement with a protractor 1. Dot directly under 90 at vertex of angle 2. 0 line along one side of angle 3. Measurement value where angle’s other side crosses protractor Answer: 120 degrees

10 You try…. What is the measurement of this angle? Answer: 70 degrees

11 Pelvic measurement: sub-pubic angle dot of protractor on pubic symphysis where bones meet Pubic symphysis ramus of L. ischium 0 line along ramus of left ischium read measurement on ramus of right ischium Answer: 77 degrees

12 Sources Ward’s Natural Sciences Sherlock Bones: Identification of skeletal remains. p.10,11,12, 16, and pelvis, skull


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