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Discuss Avo light meter in the Electrical Tools and Products area at ElectriciansForums.net
Zoom in on the last photo...... rating factor applied for different types of lighting.What's the light source factor
I presume it's where you derate the reading depending on source
Im googling luxmeters but I'm not seeing any analogue ones in the resultsZoom in on the last photo...... rating factor applied for different types of lighting.
The claimed accuracy in my 1960's Avo 7 manual says, for DC, 1% of full-scale value over the range. For AC 2.5% from 25Hz to 2kHz. You can read the scale accurately because of the blade pointer and non-parallex mirror, so you adjust the position of your head to view from exactly above the pointer.I wonder what the accuracy is like on the old stuff
Did they have calibration back in those days ?
The vintage avo stuff is cheap, investment opportunity I reckon, helps if you know how to repair them
Reply to Avo light meter in the Electrical Tools and Products area at ElectriciansForums.net
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