It is a device used to measure the proportion of Sara both to evaluate the appropriate adjusting device such as a desk and Chair combos so ergonomically correct.
It is a device used to measure the proportions of her report to assess the appropriateness of adjusting devices such as computer desk chair to be ergonomic.
It is a device used in the measurement of the proportion of dead body to evaluate the equipment such as computer table, chair, to correct according to the principles of ergonomics.