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Graphmatic Repairs?


bob_moulton

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I think you might be out of luck. It might be a case of - "If you want

a job doing properly.........do it yourself".<br>If you do attempt to

clean and service them yourself: DON'T undo the screws at the bottom

end of the holder on the back face. These only hold an end stop/septum

guide, and aren't holding anything together. The screws for

dismantling are the ones at the top of the holder, on the side edges.

All four of these need to be removed, and they're a pain to put back,

requiring a small plate to be fiddled into position beneath

them.<br>Once the holders are apart, it's quite easy to clean

everything.<br>Be careful with the pressure springs when

re-assembling, and the little number wheel. The number wheel is

magnetically coupled and can't get put out of alignmnet, but it

can get badly bent.<p>One other thing to remember with Graphmatics, is

that they don't have the same register as modern DDs. The register is

~5.5mm on Graphmatics, as opposed to the standard 4.76mm, and you

should move the focus 0.75mm further towards the GG after focusing. I

have a mm rule fixed to my camera bed just for this purpose.

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>One other thing to remember with Graphmatics, is that they don't

>have the same register as modern DDs. The register is ~5.5mm on

>Graphmatics, as opposed to the standard 4.76mm, and you should move

>the focus 0.75mm further towards the GG after focusing. I have a mm

>rule fixed to my camera bed just for this purpose.

 

<p>

 

Where in the world did you get that, Pete? That might be true for

YOUR particular setup, but not generally. Grafmatics were designed

to be interchangable with other film holders. I just noticed you

used a terms "modern DDs". If that isn't sheet film holders, then

what is it?

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I can repair and rebuild your Graphmatic holders. Most of the time

the tension springs need to be adjusted and the unit cleaned

(internally). If your septums are bent there is nothing that can be

done other then replacing them. If you are interested you can send me

an email.....

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"Where in the world did you get that, Pete?" <br>I got it very simply;

by measuring the register of my Graphmatics with a depth gauge. They

<i>all</i> measured 5.5 mm, which is a mile away from the standard

register of 4.75 mm. Well, OK, a very small 'mile' of 0.75 mm.<p>This

business of a 'standard' ISO register has started to puzzle me lately.

It seems that until very recently, nobody that built cameras or made

film holders took a blind bit of notice of it.

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