Ross Herbert writes:

On 07 Jan 2005 09:31:00 -0500, Sam Goldwasser
wrote:

"NSM" writes:

"Sam Goldwasser" wrote in message
...
| I have a spectrophotometer with a wavelength adjustment like this:
|
| http://repairfaq.cis.upenn.edu/Misc/multitrn.jpg
|
| but I'm missing the black (in this photo) knob. It must have been
accidently
| lost before I acquired the device - the knob is easily removed so the
| calibration can be adjusted.
|
| Does anyone have an extra knob kicking around or know where to obtain just
the
| knob?

Mouser.com amongst many others.

Sorry if I missed where in their catalog it might be. They have the
Vishey multiturn assemblies but I don't see knobs sold separately. This is not
just some common knob for a 1/4" shaft. It snaps onto a large outer shaft
that has set screws to permit the relationship of the dial and pot or
whatever is being turned, to be calibrated.


Precisely what are the details of the shaft on which this knob must
fit? One would imagine that if this is not your standard
run-of-the-mill 1/4 inch shaft then this info is vital before anyone
can suggest a source. Unless everyone is familiar with the particular
potentiometer they don't know what the shaft looks like.

It's probably unique to that multiturn dial, has nothing to do with the
potentiomenter or whatever it drives. Likely only available from Vishay
or whowever makes it for them.

Thanks.

--- sam | Sci.Electronics.Repair FAQ Mirror: http://repairfaq.ece.drexel.edu/
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