[ma...] Posted April 9 Share Posted April 9 We have recently version gearpro. Pre version(gearpro) has fha(helix error). I don't understand why the ANSI B92.1 specification released before 2000 has been changed to after 2025. This is a sudden development. Fa represents the total profile error and is an absolute value. Fa, which has a vector value, does not align with higher-level theories. In other measuring instruments, the Fa value is an absolute value. The Zeiss Gear Pro is the only exception. We managed it using fha (helix error). This is because fha (helix error) is the only parameter that possesses directionality. Link to comment Share on other sites More sharing options...
[ma...] Posted 7 hours ago Author Share Posted 7 hours ago (edited) Please sign in to view this quote. Edited 7 hours ago Link to comment Share on other sites More sharing options...
[ma...] Posted 7 hours ago Author Share Posted 7 hours ago (edited) Please sign in to view this quote. Edited 7 hours ago Link to comment Share on other sites More sharing options...
[Ri...] Posted 2 hours ago Share Posted 2 hours ago You can have both. There is an Fa or a Fb with directional values, and there is the more typical known Fa or Fb that is the absolute value. Maybe someone like Please sign in to view this username. could help shed some more light as to why the ANSI spec is reported this way. Link to comment Share on other sites More sharing options...
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