Piping > Piping and Piping Systems > Configuring Piping > Specifying Thumb Wheel Increments
  
Specifying Thumb Wheel Increments
You can specify the increment for each controllable movement of the thumb wheel using the piping_thumb_wheel_increment or piping_thumb_wheel_ratio_inc configuration options, as applicable. In certain cases, Spec-Driven Piping uses the following configuration options to determine the increment value:
Configuration Option
Description
create_fraction_dim
No—Spec-Driven Piping creates dimensions in the decimal format (default).
Yes—Spec-Driven Piping creates dimensions in the fractional format.
dim_fraction_format
Std—Spec-Driven Piping displays dimensions as a fraction in the standard Creo Parametric format (15 1/2 for 15.5 inches).
Aisc—Spec-Driven Piping displays dimensions as a fraction in the AISC format (1' 3 1/2" for 15.5 inches).
dim_fraction_denominator
Sets the largest denominator to be used in a fraction, when you want to display linear dimensions in a fractional format.
default_dec_places (0-13)
Sets the number of decimal places that Spec-Driven Piping must display when you want to display linear dimensions in the decimal format. By default, Spec-Driven Piping displays the dimensions to an accuracy of two decimal places.