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I own four tire gauges and get four different readings from the same tire. These things ain't exactly traceable to NIST. I have a big Intercomp that I use as the "reference" but who really knows, it's not traceable to NIST and has never been calibrated, and even if it was, a good drop would take care of that.
I bet a cheapo digital piezo type is more accurate than a bourdon tube. Have to do some tests.
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'66 911 #304065 Irischgruen
‘96 993 Carrera 2 Polarsilber
'81 R65
Ex-'71 911 PCA C-Stock Club Racer #806 (Sold 5/15/13)
Ex-'88 Carrera (Sold 3/29/02)
Ex-'91 Carrera 2 Cabriolet (Sold 8/20/04)
Ex-'89 944 Turbo S (Sold 8/21/20)
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