Fitness measuring tapes or calipers

Hey,
I am looking for measuring tapes that can be used to measure waists/arms/legs etc. These come in a plastic unit and are retractable and you can 'lock' them in a loop.
Also, calipers for measuring bodyfat percentages.
Cheers!

Please check the following supplier

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Please check the following supplier of Caliper and see if this is of worth and fulfill your requirement.

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Try...
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:)