At the micrometer dial or digital readout level of precision boring heads, the detail of adjustment resolution is enhanced to 0.0005mm. Backlash free adjustment of repeatable settings is provided through proprietary mechanisms. These heads are ideal for parts machined from Inconel alloys, used in aerospace engine components and medical implants, and, due to the use of carbide-tipped (1400HV hardness) cutting tools, advanced materials with up to 80% less iterative refinement compared to conventional boring heads.