Patent ID: 8317522

Claim:
An algorithmic slide rule for diagnosing a 2D/4D digit ratio of an individual based upon a measure of the index finger by a measure of the ring finger, comprising: a. a fixed base having printed thereon a first finger-length scale juxtaposed to entries on a second finger-length scale on a top rotating disc, a hormonal quotient scale, a hormonal status indicator, and a ruler face, said ruler face being of the metric system, said first finger-length scale on said base represents a logarithmic equivalent to a measure lengthwise of a ring or index finger of said individual; b. said top rotating disc having a smaller diameter than said base and coaxially mounted on top of said base provided with said second finger-length scale juxtaposed to entries on said first finger-length scale on said base, and a hormonal quotient arrow pointing to said hormonal quotient scale and to said hormonal status indicator, said second finger-length scale on said disc represents a logarithmic equivalent to a measure lengthwise of a ring or index finger of said individual; whereby when the individual measures the length of said ring finger and said index finger on said ruler face and aligns the value of the measured length of said ring finger on the first finger-length scale with the value of the measured length of said index finger on the second finger-length scale, said hormonal quotient arrow automatically moves to a hormonal quotient result in said hormonal quotient scale with simultaneous visualization of the resulting hormonal status.