The guys at Longacreracing told me when I was looking that the liquid
filled will be the most accurate, of course I was not looking at the
first $360 gauge that Jeff posted.
I purchased this one
http://www.longacreracing.com/catalog/item.asp?id=1120&catid=8 My
calibration technique consisted of comparing it to 2 of their digital
units and it gave the same reading, that was my super accurate
calibration :)
To have what you specifically asked for with fill nozzle, take a look
at
http://www.griotsgarage.com/product/digital+tire+inflating+gun.do?sortby=ourPicks&from=Search
I have the dial (or is that analog) version of it and i have been happy,
its 10+ years old and gives the same reading as the liquid filled gauge.
It does not answer your calibration question, but I think for tires
at least, I don't know what you will use it on, that the most important
thing is consistency, that is why I have 3 gauges one in each car and
motorcycle and the guys at longacreracing sure like their liquid filled
guages when you talk to them.
mike
On 8/13/2013 6:57 AM, Jeff Scarbrough wrote:
> On Tue, Aug 13, 2013 at 9:25 AM, <eric@megageek.com> wrote:
>> OK, here is my most 'anal' post to date...
>>
>> I've been trying to figure out how to get an *ACCURATE* tire pressure
>> gauge. But I have no idea how to check or calibrate them.
> At least you aren't alone. The question runs in my family too. My
> dad once went into a tire store with a similar question - "How do you
> calibrate your tire gauges?" - and they looked at him like he was from
> Jupiter.
>
> I suppose there are electronic gauges that are reasonably accurate,
> though a calibration certificate is expensive. And then there's this:
>
> http://www.longacreracing.com/catalog/item.asp?id=1520&catid=8
>
> Lots more choices here
> http://www.longacreracing.com/catalog/catlist.asp?catid=8 including an
> "economy" gauge for $40 that "reads to 1/2 lb". No mention of
> accuracy, though. Need to go more $$$ to get them to say anything
> about that..
>
> I'm curious as to what others may have to say...
>
> Jeff Scarbrough
> Corrosion Acres, Ga.
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