XPost: sci.electronics.equipment   
   From: presence@MUNGEpanix.com   
      
   In sci.electronics.basics Pimpom  wrote:   
   > On 6/26/2020 9:53 AM, Cydrome Leader wrote:   
   >> In sci.electronics.equipment Pimpom  wrote:   
   >>>   
   >>> My mechanical slide caliper has a resolution of 0.001 inch. This   
   >>> means that it can display measurements with a precision of 1 mil,   
   >>   
   >> What if your caliper had a resolution of 1 mil +/- 3 counts on the last   
   >> digit? That's the issue with multimeters that have completely bogus digits   
   >> at the end. Those number are just noise and serve no purpose at all. They   
   >> don't even compare to all bullets missing the target but landing in the   
   >> same wrong spot.   
   >>   
   > You seem intent on picking an argument by inserting a statement   
   > that agrees with the following sentences. BTW, my caliper is not   
   > digital, so the matter of +/- count is irrelevant.   
      
   electronic test equipment is digital these days, so my question is very   
   valid.   
      
   How would you feel if your vernier or thimble readouts on your hand tools   
   had number that randomly moved around? That's the goofiness of how these   
   digital integrating meters work. It makes very little sense when directly   
   translated into the physical word.   
      
   Take a 100 foot surveyor's tape measure. Those are simple to read. You have   
   feet and inches, and they're all in order. Let's our 100 foot tape is   
   accurate to 3inches over that 100 feet. Not great, but fine for us.   
      
   Now go digital, with the analog feel. Say the tape is now a long e-ink   
   display and has no factory printed numers on it like a conventional tape.   
   Every time you pull the tape out it redisplays tape measure printing and   
   you get stuff like this:   
      
   ... 12ft 1in 2in 4in 5in 3in 6in 7in 8in 9in 11in 10in 13ft ...   
      
   How would that feel?   
      
   It makes absolutely no sense unless you understand the silly types of   
   errors that are display on devices where we expect direct read out of   
   numbers.   
      
   >>> but that doesn't guarantee that a measurement taken with it will   
   >>> be accurate to 1 mil. I may not always press the jaws snugly   
   >>> enough and the scale may not be perfectly accurate.   
      
   crappy meters can lack "snug" readings.   
      
   --- SoupGate-Win32 v1.05   
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