बेलनाकार वर्कपीस के बाहरी व्यास की जाँच करने के लिए विशेष रूप से किस प्रकार के गेज का उपयोग किया जाता है?

Which grade of slip gauge is standardly employed in precision tool rooms for checking and setting other gauges?

What is the function of the ratchet stop in a micrometer?

In an outside micrometer, which part is rotated to move the spindle over larger distances and carries the graduated scale of 50 divisions on its bevelled edge?