Image: NIOSH наушники en
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Description: An earmuffs may be used to protect hearing. The size of the "standard" cup is 65 - 41 mm (1). During an anthropometric study (2), the ear sizes of pilots were obtained, the maximum dimensions: 79.7 - 53.8 mm. The image combines ears of the minimum (left) and maximum (right) sizes with "standard" cups. Any worker with large ears may have problems using "standard" earmuffs. 1 The Noise Manual / 6th ed. American Industrial Hygiene Association, 2020
2 Anthropometry of the human ear. A photogrammetric study of USAF flight personnel. 1968.
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