J. J. Fowler

Voltage-Drop Calculator, a handy reference tools for electricians, engineers, and do-it-yourselfers. Determines the voltage loss along a wire, so you …

Determine the proper wire size when designing or installing new circuits. The current calculator calculates the maximum allowed current for wire sizes …

Calculate the proper tap and die drill size for all the most commonly used sizes of screws. Lookup drill sizes when working with course thread, fine t …

Bill's Notepad - Resistor color code.A handy reference that displays the resistor color-code. Useful for the engineer, electrician, student, or even t …

A convenient reference tool for electricians and electrical designers. Determine the proper conduit size to use for the job at hand. Select the wire t …