# Bone Measurement “How To” Guide.

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Bone Measurement “How To” Guide

2 ways to measure bones Measure lengths and widths Measure angles

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’

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

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’

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

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

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

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

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