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Why Number ?

Why in our industry do we say 2 No or 2 number rather than just two?


2 No Sockets , 2 No Luminaires etc etc.


what`s wrong with just plain 2 or 4 or 99 or whatever?


I have worked in a couple of light engineering shops.

When making components they used the term "off".

2 off blue widgets, 5 off red widgets etc etc.


Firm A always recorded on their inspection history card the quantity in finished components.

Therefore example, a ring of metal was produced and at some stage it was cut into 12 components.

The entire history qty at each stage of operation was "12 off".

So 3 rings at start was 36 off for the entire process.


Firm B, however, recorded the quantity as 3 off until the split into segments then it became 36 off.


I witnessed a confusion and a great big polarised row when an inspection who worked for firm A left and then worked at firm B.

He followed the practice he had been taught (36 off at each stage from start to finish) .

In fact, as the Firm B in this particular job was producing components on behalf of Firm A then it also became a bit of a row between firms too.


Anyway, why 2 No or 2 off and not just plain old 2 ?


Parents
  • mapj1:

    In the world of Kahki paint it gets more confusing - here the abbreviation no. means part number, so a Number 8 morse key is the part description - you then need to say so-and so many off.

    (to mean of and exactly that number  of - being more rigorous, rather like the maths folk using  iff  to indicate " if and only if" .)


    So you get Equipment, special purpose no 99, 23 off - for exactly 23 items each of which have the part no 99 stamped on them (that's not a real example, real numbers are much longer and easier to confuse.)

    But then the MOD have their own language - we get in to the world of materiel which they use to mean what most of us understood to be materials...

    Mike.


    Back in my avionics days, I remember the story where apparently RAF stores allowed other items of the same nomenclature (that's a word I have not used since 1974) to be used to replace misplaced items. So Hangers, Coat could be used to make up a shortfall of Hangers, Aircraft..... (Well so they said)  Valves, Electronic were Resistors were 10W/ or 110W/ capacitors 10C/ or 110C/ with a string of figures following. Maybe just four, or sometimes the last part of the NATO Stock Code following the 99-  or indeed the whole lote.

    Clive



     


Reply
  • mapj1:

    In the world of Kahki paint it gets more confusing - here the abbreviation no. means part number, so a Number 8 morse key is the part description - you then need to say so-and so many off.

    (to mean of and exactly that number  of - being more rigorous, rather like the maths folk using  iff  to indicate " if and only if" .)


    So you get Equipment, special purpose no 99, 23 off - for exactly 23 items each of which have the part no 99 stamped on them (that's not a real example, real numbers are much longer and easier to confuse.)

    But then the MOD have their own language - we get in to the world of materiel which they use to mean what most of us understood to be materials...

    Mike.


    Back in my avionics days, I remember the story where apparently RAF stores allowed other items of the same nomenclature (that's a word I have not used since 1974) to be used to replace misplaced items. So Hangers, Coat could be used to make up a shortfall of Hangers, Aircraft..... (Well so they said)  Valves, Electronic were Resistors were 10W/ or 110W/ capacitors 10C/ or 110C/ with a string of figures following. Maybe just four, or sometimes the last part of the NATO Stock Code following the 99-  or indeed the whole lote.

    Clive



     


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