Yes they are affected by such outside influences. A simple beam balance scale is also thrown off by breeze from a close by heater/AC vent. Back in the day I had computer speakers near the scale, they affected operations as well. Must have been the magnetics in the speakers.Does anyone here know what the percentage of inaccuracy is common to a balance beam scale like a standard non-accurized 1010 is? I do not.
Lastly is it true or untrue that the electronic trickler/scale combinations are affected by florescent light or other light forms and atmospheric factors like a breeze created by your AC or heat that contacts the scale?
I've been kicking around for YEARS upgrading to a electronic scale and powder trickler but have was to concerned about it being affected by light and atmospheric factors to take the financial plunge.