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  1. Member
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    #1

    once in six month / once in every six month

    As per the Schedule Q, the frequency of calibration for Total Station instrument is once in six month / once in every six month. However new equipment calibration is valid for one year.

    Which one should I use in the underlined part? Should I use definite article 'the' before 'frequency?'
    "In sandy soil, when deep you delve, you reach the springs below; The more you learn, the freer streams of wisdom flow." - Thiruvalluvar

  2. Editor, UsingEnglish.com
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    #2

    Re: once in six month / once in every six month

    I would use once every six months, or biannually.

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    #3

    Re: once in six month / once in every six month

    Quote Originally Posted by Tdol View Post
    I would use once every six months, or biannually.
    Semiannually is more precise. Biannually​ can also mean "once every two years".
    I am not a teacher.

  4. Piscean's Avatar
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    #4

    Re: once in six month / once in every six month

    I avoid bi- words because I am nor sure how the person I am taking to will interpret them. See the usage discussion here.
    Last edited by Piscean; 14-Dec-2016 at 19:32.

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