10 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o
gf
Model 4087
only
Wire Size
— Enters or calculates Wire Size for
3-Wire Measurements. Unitless entries assumed
Inches in U.S. mode; millimeters in Metric mode.
Calculates the recommended Best (Ideal), Maximum
and Minimum Wire Sizes given an entered Thread
Size.
b
Bolt Pattern
— Enters the number of holes in a
Bolt Pattern. Calculates the hole Center-to-Center
Spacing and the x and y coordinates for each hole
in a Bolt Pattern given entered Diameter, Number of
Bolt Holes, Starting Angle (optional) and Center x and
y coordinates (optional; Model 4087 only).
gb
Model 4087
only
Thread Classication (Thread Class)
— Used
to select the Thread Class for numeric and fractional
Threads and the Tolerance Class for metric Threads.
The default Class for numeric and fractional Thread
Sizes is 2B (Internal) and the default Tolerance
Class for metric Thread Sizes is 6H (Internal). See
Thread Sizing section for further details on available
Classes.
gb
Model 4086
only
Starting Angle (Start Angle) — Enters the Starting
Angle of the rst hole of a Bolt Pattern, with 0° being
the three o’clock position and the rotation going
counterclockwise.
t
Thread Size
— Enters a numeric, fractional or metric
Thread Size and provides Thread characteristics
such as Cut Tap Drill Size, Minimum Major Diameter,
etc. See Thread Sizing section for further details on
entry format, valid entries and a listing of the resulting
Thread characteristics.
gt
Model 4087
only
% Thread
— Enters a non-standard Thread Grip
Percentage for use in determining screw Tap Drill
Sizes. Default value is 75%.
(cont'd)
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