4 
I.— Measures 
Metric to 
The fundamental unit of Metric Length and Weight is the Metre, assumed to be the io- 
stundard metre at its normal temperature of 32 0 F. is 3T31°T9 
Inohes, 
Feet. 
Yards, 
Millimetre 
=3 
Yoao metre 
S 3 
0*03937 
0 00328 
o’Ooiog 
Centimetre 
= 
TtW »» 
= 
0*39371 
0 03281 
0*01094 
Decimetre 
= 
1 
To »* 
= 
3*93708 
0*32809 
0* 10936 
Metre 
= 
unit 
= 
39*37079 
328090 
1 09363 
Decametre 
= 
10 metres 
= 
393'70790 
32*80899 
10 93633 
Hectometre 
= 
100 „ 
= 
3,937*07900 
328*08992 
109*36331 
Kilometre 
= 
1,000 ,, 
= 
39,370*79000 
3,280*89917 
I, 093 63306 
Myriametre 
= 
10,000 ,, 
= 
393,707'90000 
32,808*99167 
10,936*33056 
One Micron (j u.)(f>'. micra), a one-thousandth of a millimetre = *ooi millimetre = '000039 inch. 
Multi 
Metres. 
Millimetres 
to 
Inches, 
Feet. 
Metres. 
Centimetres 
to 
Inches, 
Feet, 
1 
0*001 
0*03937 
0*00328 
0*01 
0*3937 
0*0328 
2 
0*002 
0*07874 
000656 
0*02 
0*7874 
00656 
3 
0*003 
0*1 1811 
0*00984 
003 
1*1811 
0*0984 
4 
0*004 
0*15748 
0*01312 
004 
1*5748 
0*1312 
5 
0*005 
0*19685 
001640 
0*05 
1*9685 
0*1640 
6 
0*006 
0*23622 
0*01969 
006 
2*3622 
0*1969 
7 
0*007 
0*27560 
0 02297 
0 07 
2*7560 
0*2297 
8 
0*008 
0*31497 
0*02625 
0 08 
3*1497 
0*2625 
9 
0*009 
0*35434 
0 029^3 
009 
3 5434 
0*2953 
xo 
0*010 
0*39371 
0*03281 
010 
3*9371 
03281 
British to 
I inch 
12 inches = I foot 
3 feet = 1 yard 
2 yards e= i fathom 
5$ „ e= 1 pole or perch 
40 poles = 1 furlong 
8 furlongs = i mile 
Millimetres, 
25*39954 
304*79449 
914*38348 
1,82876696 
5,029*10914 
201,164*36576 
1,609,314*92612 
Centimetres, 
2*53995 
30*47945 
9i*43835 
182*87670 
502*91091 
20,i 16*43658 
160,931*49261 
i chain = 20*11644 Metres, 1 Geographical mile = 1*1527 Statute miles =‘1,855*052 metres. 1 degree = 
1 mil = Yjjao inch = 0254 m.m. 
Multi 
Inches 
Feet 
to 
to 
Millimetres. 
Centimetres. Decimetres, 
Centimetres. 
Decimetres, 
Metres. 
1 
25*3995 
2*54 
0*254 
30*479 
3*048 
0*305 
2 
507991 
5*08 
0*508 
60*957 
6*096 
0*610 
3 
76*1985 
7*62 
0*762 
91*438 
9144 
0*914 
4 
101*5982 
10* 16 
1*016 
121918 
12*192 
1*219 
5 
126*9977 
12*70 
1*270 
152*397 
15*240 
1*524 
6 
152*3972 
15’24 
1*524 
182*876 
18*288 
1*829 
7 
177*7968 
1778 
i *778 
213*356 
21*336 
2*134 
8 
203*1963 
20*32 
2*032 
243*835 
24*384 
2*438 
9 
228*5959 
22*86 
2*286 
274*315 
27*432 
2*743 
10 
253*9954 
25*40 
2*540 
304*794 
30*479 
3*048 
I inch = 
25 , 399*54 micra. 
inch = 253*995 micra. 
Fractions of an Inch to 
Millimetres . 
i = 12*6998 
i = S'0799 
1*5 = 2*5400 
At 
= 0*8467 
| = 8*4665 
J = 4*2333 
T \ = 21166 
sV 
= 0*7937 
1 = 16*9330 
t = 3*6285 
Vi = I *5875 
¥8 
= 0*6350 
i = 6*3499 
1 = 3*1749 
= 1*2700 
= 0*5080 
j = 19*0497 
i — 2*8222 
■h = l'o 160 
Too 
*= 0*2540 
