Hi folks,
has anyone built a 3 point bore gauge? I imagine something along the lines of a set of three round contact points, distributed equidistant with a micrometer head oriented perpendicular to the contact points. I could see a precision steel bearing ball being pressed out by an advancing micrometer spindle. The travel would be limited but I think it could be done accurately. It could also be done over a range of diameters.(using different heads into which the micrometer is fitted)
My particular application is to accurately measure shallow (ie ~.1" or less) internal bored round stock. I need high accuracy since I need to machine a companion disc to press fit into the bore hole.
Anyone know if this project has been tackled?
Doug
has anyone built a 3 point bore gauge? I imagine something along the lines of a set of three round contact points, distributed equidistant with a micrometer head oriented perpendicular to the contact points. I could see a precision steel bearing ball being pressed out by an advancing micrometer spindle. The travel would be limited but I think it could be done accurately. It could also be done over a range of diameters.(using different heads into which the micrometer is fitted)
My particular application is to accurately measure shallow (ie ~.1" or less) internal bored round stock. I need high accuracy since I need to machine a companion disc to press fit into the bore hole.
Anyone know if this project has been tackled?
Doug