In the construction of an engineering scale, it is essential to contain the given information as:
(a) Representative fraction or RF.
(b) Units in that the scale has to measure as like meters, yards, kms, inches, feet, miles.
(c) The largest length such is necessitated to be measured or in one placing via this scale.
(d) Real length of the scale to be constructed.
Method of Construction
(a) Find out the representative fraction or RF like explained earlier in this unit.
(b) Units are generally specified in the problem itself.
(c) The largest length is shown in problem also.
(d) The real length of the scale can be calculated via the given formula as:
Real length of the scale = RF × Maximum length to be measured.