Instead of 250X magnification on the specimen, where the vendors standard suggests 50X, 100X, 200X, 500X magnification only
What we are going to miss when we have 200X micro instead of 250X, or is it makes sense economically to go for 500X specimens?
ASTM A262 Practice E suggests the range of 100 to 250X, but the contractual obligation is 250X mandatory. Please share your views
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