Side
af
764
Forrige
Næste
581
OF ENGINEERING FORMULÆ.
Weights and Measures—continued.
Surveying Measure (Lineal).
ins. links, feet, yards, chains. mile. métres.
1= «126= -0833= -0278— >00126= -0000158= -0254
?-92=l =z'66 =-22 = -01 =-000125 = -2012
12=1,515= 1 =-333 = •01515=,000189 = ’3048
36=4-545= 3 = 1 — *04545—'000563 = -9144
792=100 = 66 — 22 = 1 ="0125 = 20’116
63360=8000 —5280 =1760 —80 =1 =1609'315
1 knot or geographical mile = 6082 "66 feet = 1854 mb tres
= 1 • 152 statute mile.
1 Admiralty knot = 1*1515 mile = 6080 feet, see pages 415
and 416.
See Table of knots and miles,
Square Measure.
ins. feet. yards, perches. roods. acre.
l=-00694 =-0007T2=-0000255='00000064=-000000159=:-000645
144= 1 =-111 =■00367 =•0000918 =•000023 =•0929
1296= 9 = 1 = •0331 =•000826 =•0002062 =•8361
39204— 2721= 30| = 1 =•025 =•00625 =25’292
1568160= 10890 =1210 = 40 =1 • =•25 =1011’7
6272640=43560 — 4840 =160 =4 =1 —4046'7
1 chain wide .. = 8 acres per mile.
10 square chains = 1 acre.
1 hectare .. = 2'471143 acres.
f = 27878400 sq. feet.
1 square mile < = 3097600 sq. yards.
f = 640 acres.
Acres X '0015625 = sq. miles.
Sq. yds. X ‘ 000000323 = sq. miles.
Cubic Measure.
ins. feet. yard.
1 — *0005788 = -000002144
1728 = 1 — ’03104:
46656 = 27 =1
cubic metre,
or stere.
— ‘000016386
= -028315
— -764513