Meredith,

Actually they came with part number 990-09091-0101 which makes me think 
they are real Sprengnether parts.
Dick

meredith lamb wrote:
> Hi Dick,
>
> Thanks for the dimensions of the springs you have on your vertical.  
> Right off....I can't imagine springs with holes in them
> as being "the" original Sprengnether springs; mainly because I can't 
> think of a need/use for the holes...unless the holes
> were some sort of crude visual positional indicators.  Logically; it 
> would seem that all 3 of us, are using "handy replacements"
> put therein by the previous owners.   Its interesting that they all 
> "work" to whatever degree; with the vertical/s.
>
> Take care, Meredith
>
>
> On Wed, Aug 20, 2008 at 3:57 PM, Dick Webb  > wrote:
>
>     Sorry, that was 0.4 to 0.5 mm thick.  I only have a non digital
>     old time mechanical micrometer.
>     Dick
>
>
>     Dick Webb wrote:
>
>         The dimensions are 0.05 mm thick by 6.3 mm wide and 4.5 cm
>         long.  Also, there are three holes at each end, the space
>         between the central holes is 2.3 cm.  It looks kind of like
>         this:             000          000
>
>         Hope this helps.
>         Dick
>
>
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