I just picked up what looks like an unused B&S #45 micrometer. The case it came in has no wear, neither does the device itself. I failed trying to research what year ranges they made these. I know it's not super old because it doesn't have a patent date like some of the real old ones. What interested me is that it ranges from 0-2" because it has a movable section.
Is there some information on what year ranges B&S made their different caliper models?
Is there some information on what year ranges B&S made their different caliper models?