Hi there
I have a FieldMaster with LM3 and believe it is need of calibration. I'm not after amazing accuracy, within +/- 5% would be OK.
I have contacted Coherent Australia who have quoted to have it shipped back to the US, have it calibrated and sent back. The quote is way more than the meter cost me! I could probably get another reasonably well calibrated newer meter for the price they've quoted!
Any suggestions?
Cheers,
Tony