A Bio-Rhythm calculator comprising:
- a. a display panel having a first circular dial face comprising a first locus of points, a second circular dial face comprising a second locus of points and a third circular dial face comprising a third locus of points, said first, second and third loci of points corresponding, respectively, to an individual's physical, emotional and intellectual Bio-Rhythm cycles, and each marked to exhibit a pair of relatively narrow diametrically opposed arcs disposed along the periphery of each of said dial faces and incorporating those points defining the critical phase of the corresponding Bio-Rhythm cycle;
- b. first, second and third pointing members rotatably associated, respectively, with said first, second and third dial faces, each of said pointing members being operable for scanning its corresponding dial face for identifying the points in its associated locus of points, each of said pointing members being independently presettable to identify any point in its associated locus of points, said first, second and third pointing members comprising, respectively, a first knob having a first circular skirt depending therefrom, said first circular skirt having indicia dividing the periphery thereof into 23 equal sections and having indicia thereon overlying one of said dividing indicia for pointing toward the periphery of said first dial face, a second knob having a second circular skirt depending therefrom, said second circular skirt having indicia dividing the periphery thereof into 28 equal sections and having indicia thereon overlying one of said dividing indicia for pointing toward the periphery of said second dial face, and a third knob having a third circular skirt depending therefrom, said third circular skirt having indicia dividing the periphery thereof into 33 equal sections and having indicia thereon overlying one of said dividing indicia pointing toward the periphery of said third dial face;
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- c. means for operating said first, second and third pointing members for sequentially scanning all points in said first, second and third loci of points in, respectively, 23, 28 and 33 days, said indicating means comprising means for rotatably advancing each of said circular skirts and its associated knob one division per day relative to its associated dial face, said means for rotatably advancing including a prime mover having an output shaft bearing a driver gear, a first idler gear meshing with said driver gear, first and second control gears meshing with said first idler gear and having control shafts connected respectively for rotating said first knob and circular skirt and said second knob and circular skirt relative to said first and second circular dial faces, a second idler gear meshing with said second control gear and a third control gear meshing with said second idler gear and having a control shaft connected for rotating said third knob and circular skirt and relative to said third circular dial face, the speed of said motor and the gear ratios of said driver, idler and control gears being selected for rotating said first, second and third circular skirts one division per day so as to perform respectively one complete rotation every 23, 28 and 33 days.