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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt'>Sorry for the late reply – I have no idea where several weeks’ worth of messages have been hanging out!<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'>It might be worth checking with someone who already has their gauges calibrated and comparing readings. I would hope the new car dealers service department would actually calibrate gauges used on customer cars, but would ask to be sure. It also occurs to me that last time I moved the movers damaged my air compressor, and the insurance company has a local company that repairs them. I wonder if they have calibrated gauges, and if one could compare readings with theirs…<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>-----------------------------------<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>All the best,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>Al Fuller<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Shop-talk <shop-talk-bounces@autox.team.net> <b>On Behalf Of </b>Jeff Scarbrough<br><b>Sent:</b> Sunday, April 7, 2024 1:13 PM<br><b>To:</b> Benjamin Zwissler <bjzwissler@gmail.com><br><b>Cc:</b> Shop-talk@autox.team.net<br><b>Subject:</b> Re: [Shop-talk] Tire Gauges<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>I know that one foot of water column equals 0.433 psi. So about 70 feet of 2" pipe attached to the side of a tall building with a thin diaphragm over a chamber with a Schrader valve should get you close. Might need to make a manometer out of it, so you'll need more pipe.<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>It's low cost, but not very practical. I did have a set of weights and an oil reservoir for calibrating liquid pressure, but liquids are not (for our purposes) compressible and air is. So I don't know how accurate that might be.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>If you had some mercury, a 5 foot column should do the trick. Don't tell the EPD, though.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><div><p class=MsoNormal>On Sun, Apr 7, 2024, 15:37 Benjamin Zwissler <<a href="mailto:bjzwissler@gmail.com">bjzwissler@gmail.com</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><p class=MsoNormal>I calibrate my Milton (which has consistently read high) to my wife's tpms value. Partly because I assume the car is right and partly because I don't like it when she's telling me a week later that she's getting low pressure lights again. <o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I don't know how to create an inexpensive standard for calibration. The Milton is the most expensive gauge I have and has been the least accurate. I looked it up on line and found lots of similar complaints about its inaccuracy. <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Any ideas on creating a low cost pressure standard for calibration?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Ben <o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><div><p class=MsoNormal>On Sun, Apr 7, 2024, 1:49<span style='font-family:"Arial",sans-serif'> </span>PM Jeff Scarbrough <<a href="mailto:fishplate@gmail.com" target="_blank">fishplate@gmail.com</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><p class=MsoNormal>So, I have three tire gauges: Accutire electronic, Jayco mechanical, and Milton Inflator hose with gauge. All three report consistently, and all three are 3-4 psi different - low to high in the above order.<br><br>Is there a simple way to check accuracy? <o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal> Jeff <o:p></o:p></p><div><p class=MsoNormal> Corrosion Acres, Ga.<o:p></o:p></p></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'>_______________________________________________<br><br><a href="mailto:Shop-talk@autox.team.net" target="_blank">Shop-talk@autox.team.net</a><br>Donate: <a href="http://www.team.net/donate.html" target="_blank">http://www.team.net/donate.html</a><br>Suggested annual donation $12.96<br>Archive: <a href="http://www.team.net/pipermail/shop-talk" target="_blank">http://www.team.net/pipermail/shop-talk</a> <a href="http://autox.team.net/archive" target="_blank">http://autox.team.net/archive</a><br><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/shop-talk/bjzwissler@gmail.com" target="_blank">http://autox.team.net/mailman/options/shop-talk/bjzwissler@gmail.com</a><o:p></o:p></p></blockquote></div></div></div></blockquote></div></div></div></body></html>