12 — Machinist calc® Pro 2gt Thread Classification (Thread Class) — Usedto select the Thread Class for numeric andfractional Threads and the Tolerance Class formetric Threads. The default Class for numeric andfractional Thread Sizes is 2B (Internal) and thedefault Tolerance Class for metric Thread Sizesis 6H (Internal). See Thread Sizing section forfurther details on available Classes.g8 Alpha — Enters alphabet character selectionmode. While in this mode, a letter can be selectedand used with D to enter a letter Drill Size.Entering this mode with a unitless entry between1 and 26 will display the corresponding letter ofthe alphabet (i.e., 5g8 displays the lettere). While in Alpha mode, presses of 8 or +scroll forward through the alphabet, while pressesof - scroll backward.a Adjacent (x) — Enters or calculates the Adjacent(horizontal) leg of a right triangle. CalculatesAdjacent value given two other right-trianglevalues. Also enters the Center x-coordinate of aBolt Pattern.o Opposite (y) — Enters or calculates theOpposite (vertical) leg or height of a right triangle.Calculates Opposite value given two otherright-triangle values. Also enters the Centery-coordinate of a Bolt Pattern.h Hypotenuse (r) — Enters or calculates theHypotenuse (diagonal) of a right triangle.Calculates Hypotenuse value given two otherright-triangle values.