[ARC5] Hewlett Packard Signal Generator HP-606B - Removing screws

[Leslie Smith]

Hello Group,
I have a 1960's vintage signal generator I wish to use to calibrate my
ARC-5 "command" radios.
The model:  HP-606B.

At the moment it's un-servicable or SNAFU.
To get inside the RF cage I need a special tool (an allen key or hex
key) on a long shaft.
Normally this is supplied by HP, with the instrument, but alas ....

I am unable to find the correct size allan key.
1/8 is too big, and 3/32 is too small.
3 mm is too big and 2.5 mm is too small.
Beyond that I WILL need the correct size on an extended shaft (may have
to drill & silver solder a shorter key onto an extension).

Perhaps it's 2.54mm or 0.100 inches?
Help!  <-   almost begging!

73

-- 
  Leslie Smith
  vk2bcu at operamail.com


On Thu, Mar 1, 2012, at 06:55 PM, Mike Hanz wrote:
> On 3/1/2012 6:04 PM, J. Forster wrote:
> > I got some tools wet inadvertantly and they rusted some. I remembered that
> > lemon juice could be used to remove surface rust, so I tried it on a mill
> > file. And, it works !!
> >
> > Practically speaking, I put the file in a ZipLok bag and added some Real
> > Lemon and let it sit overnight. It looks like new! It does give off a
> > kinda funky smell though.
> 
> It does indeed work, John.  But if you want to see the array of opinions 
> on the matter, try 
> http://www.practicalmachinist.com/vb/general/sharpening-files-anybody-done-231799/
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