Pocketbook of Useful Formulæ and Memoranda
for Civil and Mechanical Engineers

660 MOLESWORTH'S POCKET-BOOK Birmingham Wire Gauge. AREAS AND CIRCUMFEHENCKS OF CIRCLE. Diam. B.W.G. | Area. Circum- j ference. Diam. B.W.G. Area. Circum- fei ence. ins. sq. ins. ins. 1 •070686 ■94248 19 •001385 •13195 2 ■0633i7 • 89221 20 •0110962 *10995 3 ■052685 •81367 21 •OC0804 *10053 4 •041488 •74770 1 22 *000616 •08796 5 ■038013 •69115 23 •000,91 •07S54 6 •032365 •63774 I 24 •000380 06911 7 •025447 •56549 25 •000314 •062H3 8 ■021382 •51836 26 •000254 05655 9 •017203 •46495 27 (00201 • 05026 10 •014103 ■42097 28' •000154 '04398 11 ■0113Q9 •37699 29 •000133 • 04084 12 ■009331 •34243 ! 30 000113 •03710 13 •007088 ■29845 31 •000078 •03141 14 •005411 •26075 32 •000064 •02827 15 •004071 ■22619 33 •000050 •02513 16 •003318 •20420 34 •01)0028 •02199 17 • 002642 ’ -18221 35 •000020 •01571 18 •0018S6 | '15394 36 •010013 •01257 Areas of Small Circles, advancing by 32nds. I)iam. Area. A A 3*1 I •00076 •0030 •0069 •0122 •0192 •0276 •o:<76 • 0490 1 1 Diam. Area. Diam. •0621 H flr •0767 _9_ •0927 if •1104 f •1361 iH 7 •1503 •1725 II 1 •1963 1 Area. Diam. Area. 2216 I H -4781 2485 I ” .Kias '2676 j •3068 I •3385 •3712 ■4057 •4417 1 *5185 I -5591 I -6013 ■6308 -6903 •7370 -7854 For Areas of Small Circles, advancing by decimals, see Table.