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March 10th, 2009


Well, today I finally got to do the registration on the DC5000, or the Malta as FXA have codenamed it (and I tend to just use the codenames all the time, its easier than trying to differentiate between, for example, the DC450 and the DCC450 ... sigh ... Nausicaa and Kutani if you must know). Registration is the process of making the image fit on a page square and line up with the image on side 2. Keywords like skew, perpendicularity, and magnification abound.

The other senior tech and I kind of decided, seeing as how the ruler we ordered to help us do registration on it isn't likely to turn up anytime soon, to just go ahead and have a stab at it.

Both of us, when we did training on this machine, were able to access a high precision ruler with graduations down to .1mm. Thats each mm separated into 10 more. It means you have to use at least a 10x loupe to be able take measurements. This is the ruler we have ordered.

So we found a loupe at work (a 25x pen-type affair) and the customer had a ruler with .5mm graduations on it (each mm separated in two). The ruler was about 2mm thick so this made things interesting. At 25x, you can focus on the marks on the ruler or the lines on the page. Not both. At .5mm graduation, at best you just have to guess where that line intersects the ruler.

The result was pretty good I thought. Magnification is still a bit out, but everything else looks good.

Last night, I thought I might see if I could google up a business that can make a ruler with .1mm graduations. No dice. I spent quite a while framing different queries and nothing turned up beyond a nice .5mm graduated ruler from Schaedler and a company that custom makes rulers. When emailed, I was told they only did .25mm graduated rulers, despite their web page stating different (up to 1/100 mm graduations, or .01mm, apparently). I'm still waiting on a reply about that discrepancy.

In any case, totally disappointed. Tonight was loupes, and they were much more popular. Cheap plastic ones go for as little as $12 or so. Found a good quality 10x for about $50, which looks good. Might even get one for myself.

Welcome to my geeky little world of high precision rulers.

Chroming up

Oh, and I am having a serious love affair with Google's Chrome web browser.

I haven't taken to humping the laptop screen yet but I may have been caught nuzzling it once or twice. I am having a lot of trouble finding faults with it.

The sound on my linux laptop died last night so I have ditched that and - almost with glee I might add - am now back to my work laptop which runs Windows and has Chrome installed.

I just updated Opera on linux to the bleeding edge version, which still has the same problems as the previous bleeding edge version (namely, occasionally flash objects cause it to hoover up cpu time and destroy the system).

In disgust I switched back to FF in linux and uninstalled everything except Adblock and locationbar2.

And then the sound died so I had a reason to go back to playing with Chrome in Windows. C'mon Google! Release Chrome for linux already! (the codeweavers port uses an old version - and its still a windows app running on linux) Give me a reason to fix my linux laptop!


Steve P
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