Originally Posted by benjiboy
it's only calibrated in Weston speeds which was their own way of rating film although you can get a conversion chart
No need for a chart. The Weston number is 80% of the ISO/ASA. e.g. ISO 100 is Weston 80, ISO 400 is Weston 360, etc.
"People who say things won't work are a dime a dozen. People who figure out how to make things work are worth a fortune" - Dave Rat.