This site still under development

  “It is unworthy of excellent men to
        lose hours like slaves in the labour
            of calculation “
                Gottfried Wilhelm Leibniz (1646-1716)

This app is the result of some of many little utilities I made over the years to simplify life. Some you might use every day, some maybe once in a while.

These are just some of the functions, others include: Trig, Chords, Centre Drills, 3 Point Circle, Inches per Foot taper calcs, Polar Co-ordinate calculations, Quick Conversions, and more.

Click image to zoom

Thread Functions: Includes a searchable list of a couple hundred standard threads. If that is not enough, then you can enter your own. The threads are calculated per ASME/ISO standards B1.1-189, ISO 965 – 1 -1998

Thread functions also include Metric and Acme, Standard and Stub.   Calculates Three Wire measurement.

Basic Bolt Hole locations. Enter number of holes, PCD, X & Y centres, start angle, or if not a complete 360 degrees the angle between the holes. The PCD can also be calculated by using the FROM CHORD button. 

Countersink function allows you to measure the max dia. of a countersink using a steel ball, or calculate the depth to get that dia.

Tap drills for different threads, UN, Metric and Acme are Calculated and the nearest standard drill is displayed. choose from the large list of threads or enter your own. Pipe threads just display the recommended drill.

A searchable List of all standard drills from 0.1mm to 26mm, including Number, Letter, and Fraction. Search by drill size e.g., 5/32 or dia. Also shows point depth for 118 deg tip.

Calculate the taper of a bore using Balls