If you are a sole proprietor or small shop, this qualifies as a business expense. Keep the receipt.
of indications. A standard PDF printout may distort the scale, leading to incorrect severity grading. Compliance: astm e125 reference photographs pdf free download
The reference photographs are taken under specific lighting (white light, ~100 foot-candles). Your inspection lighting must match this to make a valid comparison. If you are a sole proprietor or small