U ser 's GUide — 39THrEaD SIzINgbasic Thread SizingOn both Machinist Calc and Machinist Calc Pro, the t keyallows you to enter a numeric, fractional or metric ThreadSize and then toggle through the various available Threadcharacteristics, as shown in the tables provided later in thissection.When using the t key, the first entry is considered theThread Size. Upon entering the Thread Size, the Threads perInch (TPI) or Pitch is required. If the entered Thread Size is astandard size, continuous presses of the t key will togglethrough the available common TPI or Pitches. Once thedesired TPI/Pitch is reached, pressing O stores the ThreadSize. If the Thread Size you enter is not a standard size or ifyou have a non-common TPI/Pitch, you will need to directlyenter the TPI/Pitch value, pressing t after entering it in orderto store the Thread Size. Both of these entry methods arecovered in the examples provided within this section.The following specifies the entry ranges that the calculatorallows for the Thread Size and TPI/Pitch values for numeric,fractional and metric Thread Sizes:Thread Size TPI/PitchNumeric 0, 1, 2, 3, 4, 5, 6,8, 10, 12, 14less than 100Fractional 0.06” to 6” less than 100Metric 1 mm to 300 mm less than or equal to 10Note: Entries outside of the ranges mentioned above will result in anEntry Error.(cont'd)
