Inches to Chains

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Bookmark Page Chains to Inches (Swap Units)

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ch =
in * 0.0012626
 
 
 
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More information: Inches
Inches to Chains table - Click here for table options
Inches Chains
0in 0.00ch
1in 0.00ch
2in 0.00ch
3in 0.00ch
4in 0.01ch
5in 0.01ch
6in 0.01ch
7in 0.01ch
8in 0.01ch
9in 0.01ch
10in 0.01ch
11in 0.01ch
12in 0.02ch
13in 0.02ch
14in 0.02ch
15in 0.02ch
16in 0.02ch
17in 0.02ch
18in 0.02ch
19in 0.02ch
Inches Chains
20in 0.03ch
21in 0.03ch
22in 0.03ch
23in 0.03ch
24in 0.03ch
25in 0.03ch
26in 0.03ch
27in 0.03ch
28in 0.04ch
29in 0.04ch
30in 0.04ch
31in 0.04ch
32in 0.04ch
33in 0.04ch
34in 0.04ch
35in 0.04ch
36in 0.05ch
37in 0.05ch
38in 0.05ch
39in 0.05ch
Inches Chains
40in 0.05ch
41in 0.05ch
42in 0.05ch
43in 0.05ch
44in 0.06ch
45in 0.06ch
46in 0.06ch
47in 0.06ch
48in 0.06ch
49in 0.06ch
50in 0.06ch
51in 0.06ch
52in 0.07ch
53in 0.07ch
54in 0.07ch
55in 0.07ch
56in 0.07ch
57in 0.07ch
58in 0.07ch
59in 0.07ch
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Inches

Use of the inch can be traced back as far as the 7th century. The first explicit definition we could find of its length was after 1066 when it was defined as the length of three barleycorns. This was not a satisfactory reference as barleycorn lengths vary naturally. The British Standards Institute defined the inch as 25.4mm in 1930 in the document "Metric Units in Engineering: Going SI". In March 1932 the American Standards Association were asked to rule on whether to adopt the same value (at the time the American inch was 1/.03937 mm which approximated to 25.400051 mm). Because the values were so close, and because Britain has already settled on that value, the ASA adopted this value on March 13, 1933.

ch =
in * 0.0012626
 
 
 

Chains

Unit of length equal to 66 feet, used especially in the U.S. public land surveys. The original measuring instrument (Gunter's chain) was literally a chain consisting of 100 iron links, each 7.92 inches long. Steel-ribbon tapes began to supersede chains around 1900, but surveying tapes are often still called "chains" and measuring with a tape is often called "chaining". The chain is a convenient unit in cadastral surveys because 10 square chains equal 1 acre.

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