Report

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’ 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 You try… What is the inside measurement reading? Answer: 35.1mm Nasion Nasal spine 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’ 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 You try… What is the outside measurement reading? Answer: 10.1mm 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 Pubic symphysis ramus of L. ischium • 0 line along ramus of left ischium • read measurement on ramus of right ischium Answer: 77 degrees Sources Ward’s Natural Sciences. 2002. Sherlock Bones: Identification of skeletal remains. p.10,11,12, 16, and pelvis, skull