Final answer:
A nonstandard measuring device used in healthcare is the BMI scale which estimates body fat based on a person's height and weight. It is a calculated index rather than a direct physical measure, used to approximate health risks but should be used alongside other assessments.
Step-by-step explanation:
An example of a nonstandard measuring device that is currently used in the health care system is the Body Mass Index (BMI) scale. This nonstandard measuring tool calculates an individual's body fat based on their weight and height. Although BMI does not directly measure body fat, it is widely used in the health care field to approximate health risks associated with obesity and being overweight. It's a calculation rather than a direct measurement, using the formula BMI = kg/m² where kg is a person's weight in kilograms and m² is their height in meters squared.
In practice, the categorization of BMI ranges has helped healthcare professionals to talk to patients about weight-related health issues and suggest lifestyle changes or interventions. However, it is important to consider that BMI does not take into account muscle mass, bone density, overall body composition, and racial and sex differences. Therefore, while it is a convenient tool, it should be used in conjunction with other measurements and health assessments.