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Published byAllie Elam Modified about 1 year ago

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Bone Measurement “How To” Guide

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2 ways to measure bones Measure lengths and widths Measure angles

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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’

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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

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

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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

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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

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

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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

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

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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

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

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