These original Harpenden Calipers comply with the industry standard for quality and accuracy.
Harpenden Skinfold Caliper contains:
- Harpenden Skinfold Caliper
- A wooden box
- Instructional book
The Version 15 user friendly Harpenden Body Assessment software for body fat assessment using either the 4 Site Durnin & Womersley system or 3 site Jackson & Pollock system which shows:
- BMI - Basal metabolic rate
- % Body fat content
- % body fat preferred level
- Lean body mass
- Fat mass - Min/max weight guide
- Child BMI growth charts
- Subjects data can be printed in graphic or plain text formats.
Please note that the software is only compatible with PC's, not Mac's.
Minimum Windows operating system required - XP with DotNet2, but recommend Windows 7 which already has DotNet2 included
Evaluation and meaning of body composition:
The underwater or hydrostatic weighing technique is the most accurate estimation of body composition. This method does place restrictions on both convenience and practicality, and the alternative basis of skinfold thickness measurements is used therefore in all but the most stringent of requirements.
Over the last 40 years the use of skinfold calipers in the performance of skinfold thickness measurements to derive estimates of body fat, has been well established and documented.
These thickness measurements do not measure overall body fat mass or its percentage directly but rely on validated equations that describe the relationship between measures of skinfold fat as well as other body dimensions and the measured body density. Body fat percentage is determined from the estimate of body density.
Various experimenters have put forward equations which are used with either skinfold thickness alone or in conjunction with other measurements, for example body circumference or limb lengths. Two of the most common sets of equations used are attributable to Durnin & Womersley (skinfolds alone), and to Jackson & Pollock (skinfolds and body measurements). The result obtained from the equations (that of body fat density) is subsequently used in the Siri equation to calculate the body fat.
Tables are included that show the fat percentage based on the Durnin and Womersley system. Values are shown for both females and males across the whole age range based on the sum of four skinfold measurements and the results shown for each 2mm increment of skinfold thickness.
When taken correctly, skinfold measurements correlate very highly (0.83 to 0.89) with hydrostatic weighing, with a standard error of about 3 or 4 % only. In comparison, the correlation of height and weight charts is much lower at about 0.60.
A booklet is included and contains the following information:
The Harpenden Skinfold Caliper Model is CE marked in compliance with the medical Devices 93/42/EEC for class 1 Device with measuring function and calibrated using masters traceable to national standards.
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