All, this is an unknown biomechanical measuring device that was given to me by my old boss. I have no idea of it's age.
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On the device it says "chirometer Pat no. D74252 Dr H. H. DIPIERO YOUNGSTOWN, O."
What is interesting to me, is that it has a portion for measuring "navicular deviation" (is this an early navicular drift measurement?). It also, on the triangular portion, has text saying "bow legs or knock knees", this section is calibrated in inches then below this it has "Achilles deviation" in degrees, on the rectangular section it has "flexion" and "extension" again calibrated in degrees; "foot length" in inches and then "Navicular deviation" in inches.
If anyone can shed any light on this, I should be most appreciative.
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