Document 4voyXYe9GjdpL1B8DmMvnVKgp

TABLE 10-B NUDE-BODY WEIGHT OF MALE CIVILIAN POPULATIONS Population Percentiles1 (lb) Standard 1st 5th 50th 95th Deviation 99th Railroad travelers2 Truck and bus drivers3 Airline pilots4 Industnal workers5 College students8 Eastern, 18 yr old7 Eastern, 19 yr old8 Midwest, 18 yr old Midwest, 18-22 yr old10 Draft registrants11 18-19 yr old 20-24 yr old 25-29 yr old 30-34 yr old 35-37 yr old Spamsh-American-War veterans Canadians12 18-19 yr old 20-24 yr old 25-29 yr old 30-34 yr old 35-44 yr old 45-54 yr old 55-64 yr old More than 64 yr old 132 * 167* 218 * 129 164 213 247 (134) 168 (201) 20 3 (130)* 170* (210)* 24 5 (112) 142 (172) 181 (122) 150 (178) 172 (132) 159 (187) 16 2 (115) 148 (180) 19.7 (118) 156 (195) 23 5 (106) 141 (176) 21 1 (109) 146 (183) 224 (110) 151 (192) 24 8 (110) 153 (195) 25 8 (111) 154 (197) 26 1 110 118 153 190 200 22.1 140 151 157 168 165 161 159 156 1 Percentiles in parentheses were computed from the 50th percentile using the S D Because of the skewed distribution of weight, these values might differ somewhat from the true values and should be used with caution 2 Hooton, 1945 3 McFarland, et al, 1958 4 McCormick, 1947 8 Heath, 1945 9 Damon, 1955 10 Elbel, 1954 5Tyroler, 1958 s Diehl, 1933a 11 Karpinos, 1958 12 Pett and Ogilvie, 1957 7 Bowles, 1932 * Including shoes and indoor clothing (subtract 5 or 6 lb for nude weight) From C T Morgan, et at Human Engineering Guide to Equipment Design New York, McGrow-JisU Book Co, 1963 Used with permission of the publisher be read at the same time, they should be pointing the same direction when in the de sired range This will reduce check-reading time and increase accuracy Principle of coding. All displays should be coded (or labeled) so that the operator can tell immediately just what mechanism the dis play refers to, what units are measured, and what the critical range is Labeling is especially important if operators are unfamiliar with the equipment The effectiveness of labels is greatly affected by the environment If the equipment is be ing used m a dimly lighted area, illumination must be provided Glare, of course, may be a problem m a brightly lighted room Other problems may be caused by vibration, 227