Awkward Grammar Structure (pleonastic object)

[GuilhermeRM]

Hello, could anyone give me a hand on this sentence?
[...] so they do not find it inconvenient to weigh in ounces, pounds and stones; measure in inches.

Hasn't the pronoun 'it'' already satisfied the verb ''to find''? Why there is a complement?

 

[Tdol]

Where's the pleonasm? I don't get your question, I'm afraid.

 

[BobK]

The 'it' is the so-called 'impersonal it'. In this sentence it stands for 'the fact that weighing in ounces, pounds and stones is inconvenient'.

b