[Shop-talk] Tire Pressure Gauges

[Mike Sinclair]

So have I.

Mike

On 5/29/2022 5:12 PM, Bob Spidell wrote:
> I've had good luck with these:
>
> https://www.amazon.com/Accutire-MS-4021B-Digital-Pressure-Gauge/dp/B00080QHMM/ref=asc_df_B00080QHMM/?tag=hyprod-20&linkCode=df0&hvadid=312177448019&hvpos=&hvnetw=g&hvrand=16563417771390584939&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9032278&hvtargid=pla-567122411030&psc=1&tag=&ref=&adgrpid=61495038909&hvpone=&hvptwo=&hvadid=312177448019&hvpos=&hvnetw=g&hvrand=16563417771390584939&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9032278&hvtargid=pla-567122411030 
>
>
> You don't know for sure how accurate a gauge is unless you compare it 
> to a lab standard, but repeatability is a good sign, and these always 
> do. FWIW, they agree with the TPS monitor in my Mustang.
>
> Bob
>
>
>
> On 5/29/2022 10:11 AM, Jeff Scarbrough wrote:
>> A couple of tire pressure gauge questions:
>>
>> I got tired of cheap Horrible Freight tire inflators, so I sprung for 
>> a brace of Milton S-506 inflators, thinking of they were good enough 
>> for the gas station of my youth, they ought to be ok now.  One in the 
>> garage, one in the shop...they don't see a ton of use.  Last week, I 
>> was filling bicycle tires in the garage with the hotdog compressor, 
>> and couldn't get the air up sufficiently in the tire.  Finally went 
>> to get another gauge...my electronic gauge quit, and my 50 years old 
>> Bridgeport Brass gauge needs rebuilding, so I grabbed the.othwr 
>> Milton inflator.  Turns out, I had missed blowing up the bicycle 
>> tires only by a miracle of Chinese rubber.  One inflator reads 50 psi 
>> while the other one reads 90.
>>
>> So, like when two inmates at the asylum both claim to be Napoleon, at 
>> least one of them is lying. And at least one will need repairing.
>>
>> So, two questions:.
>>
>> 1.  Any suggestions for a good reliable electronic or analog pressure 
>> gauge to verify/calibrate the inflators?  (I also need one to put in 
>> my daughter's car, so gloveboxability is a plus).
>>
>> 2.  Anyone ever repair a Milton (or Bridgeport) tire gauge?  Any 
>> suggestions?  The Milton's aren't very old, especially in terms of 
>> what we old guys expect from our expensive American made tools.
>>
>> Bonus question:. How might one calibrate a pressure gauge against a 
>> primary source?  I'm thinking of a water column or something, but 35 
>> psi is approximately 80 feet of water.  I'm finding that impractical 
>> for home use.
>>
>
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