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
>
> meredith lamb wrote:
>> Hi Chris,
>>
>> Excellent!
>>
>> The two separate masses weigh a total of 20 pounds.  The absolute 
>> maximum width of the spring allowed within the
>> clamp is 0.311"; it could obviously contain a smaller width ~ 0.25", 
>> for much easier insertion/replacement.
>>
>> As a possible material prelude; I do have 0.007", and 0.014" thick 
>> phosphor bronze shim roll stock.  I also have
>> 0.010" thick blue tempered hardened steel spring shim roll stock.  
>> All old but never used.  All would need cutting
>> down and cut edge filing deburring to fit the flat clamp size 
>> firmly/easily; all the spring widths are more than 0.311".
>> Take care, Meredith
>>
>>
>>
>>  
>>
>> On Wed, Aug 20, 2008 at 8:17 AM, > > wrote:
>>
>>     In a message dated 2008/08/20, dwebb002@.............
>>      writes:
>>
>>>     I have a few pieces of the original and will measure the width and
>>>     thickness as soon as I find a micrometer.  I can attest that they
>>>     are
>>>     rather fragile.  I don't know the composition but they have a 
>>> brassy
>>>     appearance.
>>>     Dick
>>
>>
>>     Hi Dick, James , Meredith,
>>
>>            If you can give me the seismic mass and the maximum width
>>     of the clamp strip, we can work out the thickness required quite
>>     easily. The wire was almost certainly a repair.
>>            It is very unlikely to be brass, but it could well be
>>     bronze or phosphor bronze strip. You might also consider a SS
>>     replacement?
>>
>>            Regards,
>>
>>            Chris Chapman
>>
>
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