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The Southern California Linux Expo (SCALE) is an annual Linux, open source and free software conference held in Los Angeles, California, since 2002. Despite having Linux in its name, SCALE covers all open source operating systems and software. It is a volunteer-run event.
The event features an expo floor with both commercial and non-profit exhibitors, as well as 4 days of seminars on the topic of Linux and Open Source software. Sessions and presentations cover a broad spectrum of topics and technical levels.
SCALE grew out of a series of LUGFests put on by the Simi Conejo Linux Users Group in the late 90s. There were four of them, held every 6 months at the Nortel development facility in Simi Valley, California. They ended when Nortel closed that facility in 2001. Subsequently, members from SCLUG, USCLUG and UCLALUG organized to create a more regional event, which they named the Southern California Linux Expo.
Companies, organizations and projects represented at SCALE include Linux-based projects such as Debian, Gentoo Linux, the Fedora Project, KDE and GNOME, other open-source operating systems including NetBSD and FreeBSD, software projects such as Django, open-source database systems such as MySQL and PostgreSQL, other open-source applications such as Drupal, Inkscape, MythTV and The Document Foundation, activist organizations such as Software Freedom Law Center and the Electronic Frontier Foundation, major technology companies such as IBM, HP and Sharp, web companies including Google, Facebook and eHarmony, and internet projects including OpenStreetMap.

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  1. C

    How to clean the industrial boiler headers, in addition to chemical methods?

    How to clean the scale inside the casing and pipe rows of industrial boiler headers, in addition to chemical methods? What is the approximate lifespan of the end caps at both ends of the header box? Is it feasible to clean the cut end face? I want to try using a blowing machine to blow out the...
  2. J

    Radiation Scale Reducer

    Hi All, Just found this on old cistern in a loft. Looks to be original from the 1960s. Google brings up nothing. Any ideas? Apart from leaving it alone...
  3. S

    Megaflo scale issues

    Evening guys, Having some trouble with a Megaflo Indirect Unvented Cylinder! Fitted a bathroom for some customers in December and ever since the Hot filter on the bar mixer shower keeps getting scaled up with a blue coloured scale of some sort. It's only happening on the shower and no other Hot...
  4. R

    Replace Magnetic Scale Inhibitor

    My magnetic scale inhibitor is coming to the end of its 10 year life and needs replacing. This is attached to the pipework just before the combi boiler. I have a few questions that I'm hoping someone will be able to answer. Should I replace it with another magnetic inhibitor or change it to a...
  5. Lumen

    Is ElectroScale scale reducer safe for drinking water?

    Good Sunday to you all, Quick question, as manufacturer still haven’t replied to my email a week later. I’m looking to install Adey’s ElectroScale scale reducer under the kitchen sink, as it’s compression fitting, straight after stopcock, as I don’t have a water meter, so it can protect entire...
  6. A

    Polypipe UFH Flow meters - does anyone know the measuring scale?

    Hi all. I have a Polypipe UFH manifold with flow meters for each circuit. I’ve worked out the pipe length and know what flow rate to achieve BUT the flow meters do not have any scale. All I have is min (top) and max (bottom) and nothing in between! The Polypipe product code is PB129FM for the...
  7. R

    Scale Dispenser. Anyone seen this one?

    Hi Anyone have any idea where you can order cartridges for this scale dispenser? Jackson Scale Dispenser GB Reg 845496 See attached pics. Can't find any reference to it anywhere. Thanks
  8. O

    Loss off water pressure after mains scale inhibitor fitted

    Hi all, i have fitted a 22mm scale inhibitor today( due to very hard water) and have lost pressure to all the cold taps in my property bar the outside tap and the washer valve feed . I have also lost around 4L a minute on the flow rate on all the affected taps . Property is a new build MDPE...
  9. T

    Scale inhibitor furry bits

    Hello lovely plumbers, I'm moved in to a flat and the boiler has a scale inhibitor attached. However, around the ends of the inhibitor are some weird, what I can only describe as, spiky spores. Don't think mould as nowhere else so can can only think the inhibitor is leaking or something or...
  10. S

    scale problems on new houses

    hi all would really appreciate some help.. I do around about 500 new houses per year, all in the same area and all with the same equipment specification. I have one site that im having on going scale problems on the dhw side. the water hardness is 250mg/l , quite low for my area.... im using the...
  11. C

    Water Softener, Hot Tap and Scale Control

    We are currently in the process of planning a new kitchen. We are having a twin tec water softener which will be located under the sink and are also planning on having a quooker tap + scale control. The cupboard below the sink will be 900mm which we hope will be sufficient space for the...
  12. A

    For Sale, Waltham Scale Manager 2, New boxed

    Purchased by customer but never fitted, receipt for £224 which is still the current price. £125. Waltham Scale Manager 2 BNIB RRP £224 Water Conditioner | eBay
  13. B

    Airing Cupboard Cylinder

    The hot water cylinder in my airing cupboard has now been there 20years. No problems with it, but is it a possibility that sludge or silt might have built up over the years? Should I consider draining it down and flushing it out or is it best left alone? Grateful for any comments.
  14. O

    Scale reducer

    Hello plumbing lads, does anyone know a decent scale reducer for the mains ? I have been installing mostly the scale aster magnetic gold. Is there a better one which I do not know ? what sort of scale reducers are you installing ? thanks guys regards, ron
  15. B

    Mains static pressure off the scale!!

    Hi everyone, I'm new here and would love some advice regarding my mains connection. I'm near completing my barn conversion, and this morning filled up my system (thermal store,rads,ufh etc)with the help of my plumber(who is now gone and unavailable to ask for advice!). I fitted a new prv just...
  16. T

    Power flushing a back boiler

    I got a power flush booked in and they have a back boiler, they have no idea of the make or age or even if has ever been serviced. is there anything I need to no about flushing them? Or just crack on as per normal? I use a fernox powerflow with magnetic filter and usually f5
  17. T

    Boilermate 2000.

    Hi, I have a Wimpey Home BoulerMate 2000 system but the problem I've had for a long time is if your using the water in one situation like a shower and someone runs the tap or puts the washing machine on the water comes out at a trickle which is ridiculous as its a 5bed house and has 3 showers...
  18. G

    Best combi scale reducer on the market?

    Looking for a decent scale reducer, fitting an ideal vogue 40 in my own house and looking for peoples views on scale reducer, dont want a water softener though. Was thinking of this from Ray's shop Limetron 1/2 Inline Water Conditioner - Scale Inhibitors - Chemicals & Water Treatment - Heating...
  19. W

    Scale of 0-10 how dangerous is removing fuse from consumder unit w/o turning off

    Thanks chaps
  20. M

    Scale reducers

    Evening chaps, which scale reducers would you recommend fitting on boiler inlets?
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