XPost: at.home.repair, uk.d-i-y   
   From: junk@admac.myzen.co.uk   
      
   On 11/05/2019 23:12, Commander Kinsey wrote:   
   > On Sat, 11 May 2019 22:38:42 +0100, alan_m  wrote:   
      
   >> The only way you will know that your multimeter is accurate is by having   
   >> it calibrated against a known standard, ideally specified to 10x better   
   >> than your meter.   
   >   
   > Or by using it to measure a known current on a bulb I know draws a   
   > certain current.   
   >   
      
   >> So your comparison standard is something British Gas used to give away   
   >> for free, possible so inaccurate that it hasn't got a published   
   >> specification for its current measuring capability.   
   >   
   > "and by knowing what devices were running"   
      
   Plonk   
      
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