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# Commented Solution: Reading and Interpretation of Ruler or Tenth Inch Gauge – Exercise

`Results of the list of the exercises`

#### Results and comments of the exercises list: scale (graduated line gauge) in tenth inch

Exercises
Observation
1
1″
In this exercise the measure is the same as in exercise 2 in fractional inch (1 “).
2
0.5″
Half of 1″
3
0.8″
4
1.6″
5
1.25″
See that the object passes the 1.2″ mark without reaching the 1.3″ mark. I interpreted that it is half way (0.05″)
6
1.125″
See that the object passes the 1.1″ mark without reaching the 1.2″ mark. I interpreted that it has not yet reached half way and that it’s a 1/4 of the way to the next mark (0.025″). It’s worth remembering that each mark represents 0.1.”
7
1.4″
Beware of the trap of reading 1/4″ and not 1.4″ (one inch, four tenths or 14 tenths of an inch)
8
0.95″
Notice that the object goes from half a certain inch on the scale to almost half of the next, is not 0.9 “nor 1.0”.
9
2.25″
10
0.25″
I interpret that the object is halfway between 0.2 “and 0.3” in this way, it is 0.05 “to the left of 0.3 (0.25”) and goes up to 0.5 “. See that this exercise is the equivalent of exercise 7 in fractional 1/4 in fractional inch) in decimal inch
##### Eduardo Stefanelli

Engenheiro por profissão, professor por vocação