Widely used to check undercut depth, porosity comparison, amount of porosity per linear Widely used to check undercut depth, porosity comparison, amount of porosity per linear metric and crown heightand crown height
Accurate figures and increments are etched into surface
Porosity comparison of 1/8 inch and 1/16 inch
Linear gauge in 1/16 inch increments
Undercut depth or crown height scale can be read to 1/32 inch