A retractable multi-use cardiac monitor is provided that includes a memory, and a first side that includes a first housing where a first sensing connector is on the outside of the first housing, and where the first sensing connector is configured to collect electrocardiogram data and store ECG data onto the memory. A concealing assembly is attached to the center frame of an articulating bed, wherein the concealing assembly is situated below the mattress platform and conceals the base frame as the center frame moves along the base frame when the bed articulates. An application programming interface module is accessed from within the application. A corresponding pulse period scaling is stored in memory if the measured speed signal pulse period matches one of the stored set of pulse period scalings. The detector device determines the values of X and Y coordinates of the feature within the X-Y displaceable measurement stage.