I make a living writing computer software but, until now, have only ever done this for Windows desktop PCs.  As software moves inexorably to ‘the cloud’, I figured it was about time I learnt how to write applications that run in a web browser and figured, while I was learning, I may as well create something useful and this has turned in to a Scale Conversion Tool.

It has the following features:

• Convert Actual Length to Scale Length.  Enter a ‘real’ length in the units of your choice and it will be converted to the equivalent scale length in whatever units you choose.
• Convert Scale Length to Actual Length.  Same as above but the opposite way round.
• Convert Scale Length to Scale Length.  Enter a length in one scale and have it converted to other scales.
• Convert actual curve radius in chains to scale radius in a choice of units.
• Convert Imperial to Metric.
• Convert Metric to Imperial.
• Convert Thou to mm.
• Convert mm to thou.

Scales supported so far are listed below although you can enter your own scale ratio for most of the calculations if you wish.

• 2mm scale (US/EU N) - 1:160
• 2mm scale (2mm FS) - 1:152.3
• 2mm scale (British N) - 1:148
• 3mm scale (British TT) - 1:101.6
• 3.5mm scale (HO) - 1:87.1
• 4mm scale (OO, EM, P4) - 1:76.2
• 7mm scale (O) - 1:43.5

Free to use, it can be run from here: http://www.leyburnsolutions.com/scaleconverter/scale.php 

John

 

Unfortunately the gauge only shows the pressure in the tank, not what is delivered to the airbrush so you must sort of just tweak it until you are happy with the pressure being delivered then locking it in the setting you have arrived at by tightening the red ring again.

 

The way to adjust the pressure at the airbrush end is to connect and operate the airbrush with the black knob in the raised position. You can then turn this knob, while the airbrush is working, until your required pressure shows on the gauge. Then you lower the knob and tighten the red ring.

 

Thanks Mick for this, I hadn't worked that out!

This is how you do it, hold the button on the airbrush down and with the red ring unlocked pull up and then twist the black knob until the gauge shows the output pressure you require. Here I have set it to 20psi.

Oh and here is a small example of the instructions included with the compressor

"However, 100% airtight is only effective for auto stop function air compressor"

So that's that cleared up then...

And IS teflon tape available in all stores selling sanitary products?

(they are even sparser for the aibrushes, consisting of an exploded diagram and a part list)

I've just been browsing through the archives as I'm thinking of getting a new airbrush and stumbled on this thread.  I'd just like to correct a common misconception posted on here:

 

The way to adjust the pressure at the airbrush end is to connect and operate the airbrush with the black knob in the raised position. You can then turn this knob, while the airbrush is working, until your required pressure shows on the gauge. Then you lower the knob and tighten the red ring.

 

 

The Pressure Gauge, yesterday.

 

The air pressure delivered to the airbrush can be adjusted (in a rather crude fashion) by undoing the red knurled ring and the pulling the black knob upwards and twisting.

Thus!

The red ring has nothing to do with adjustment of the air pressure. The regulator on these compressors is a standard pneumatic regulator used in all sorts of applications. The red ring is for when the regulator is used in panel mounts and merely secures the regulator to the panel. Unlocking/locking of the adjustment is purely done by lifting/depressing the black knob.  You could take the red ring off and throw it away and it will have no effect on adjustments.