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. Reading Calipers: Inside Measurement
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

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’

7. Reading Calipers: Outside measurement
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

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

9. 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

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
ramus of
L. ischium
Pubic symphysis
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