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Used to measure basal metabolic rate, also referred to as BMR, which is the amount of calories your body burns at rest for basic functioning. The four-legged, wood-cased metabulator stands about 32 inches high, on wheeled casters and somewhat resembles a serving cart with an array of gauges and dials on the top of the cart. On the cart is a recording compartment with a paper roll, barometer and thermometer dials, a carbon dioxide absorption chamber and a chamber for the placement of an oxygen tank. Material: Wood, metal, rubber. Colour: Brown, silver, black. Sanborn Co. Place: Massachusetts, USA, c. 1945.