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To convert from decimal inches. A fraction of an inch.
Multiplied by 128 to decimal and simplifying the result by 128.

Convert decimal to a fraction of an inch inch

Examples:
1) Convert 0.250 "a fraction of an inch
Applying the rule, we have: (0.250 "* 128) / 128 = 32/128 = ¼"
2) Convert 1.750 "a fraction of an inch
Applying the rule, we have: (1,750 '* 128) / 128 = 1 96/128 = 1 ¾ "
3) Convert 2.953 "a fraction of an inch
Applying the rule, we have: (2.953 "* 128) / 128 = 2 122/128 = 2 61/64"
4) Convert 12.812 "a fraction of an inch
Applying the rule, we have: (12.812 "* 128) / 128 = 12 104/128 = 12 13/16"


To convert from mm. A fraction of an inch. Should be carried mils.
(Divide by 25.4) and then multiplying by 128 and simplify the result by 128.


Convert mm to inch fraction

1) Convert to 28.620 mm fraction of an inch
Applying the rule, we have: 28.620 mm/25, 4 = (1.126 "* 128) / 128 =
1 16/128 = 1 1 / 8 "
2) Convert to 38.150 mm fraction of an inch
Applying the rule, we have: (38.150 mm / 25.4) = (1.502 * 128) / 128 =
1 64/128 = 1 1 / 2 "
3) Convert 19, 060mm "a fraction of an inch
Applying the rule, we have: (19.060 mm/25, 4) = (0.750 * 128) / 128 =
96/128 = ¾ "
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Rules

The most common measurement tool in a workshop steel rule. It is used when quick action must be taken and when you do not need a high degree of accuracy. Metric steel rules are graduated in mm or mm media. The accuracy of the action taken depends on the conditions and the correct use of the rule.

Figure 3.2 Steel ruler graduated in millimeters.




Length Unit Conversion

Convert inches to millimeters

To convert inches to mm, multiply inches by 25.4.
Examples:
1) convert 4.25 "to mm.
Multiply 4.250 "being the result by 25.4: 107.95 mm.
2) Convert ¾ "to mm
Applying the rule, we have: ¾ x 25.4 = 76.2 / 4 = 19.05 mm.
3) Convert 3 5 / 8 "to mm
Applying the rule, we have: 3 "= 3 x 25.4 = 76.2 mm 5 / 8 x 25.4 = 127 / 8 = 15.875 mm, the final result by adding the partial values, we have: 76, +15,875 = 92.075 mm 2.


Convert millimeters to inches
To convert millimeters to inches, divide the mm. By 25.4
Examples:
1) Convert to inches 177.8 mm
Applying the rule, we have: 177.8: 25.4 = 7 "
2) Convert 6.35 mm to inches
Dividing 6.35 by 25.4, we have = 0.250 "or ¼"
3) Convert mm to inches 41.278
By dividing 41,278:25,4 = 1.625 "