Drill Chart (now in the App Store)
This is the absolute ultimate drill and tap chart for a hand-held device.
It is easy to use.
It has big numbers.
It lets you visualize what the inch and metric values look like with the built-in micrometer.
It lets you select values and modes without your thumb or finger getting in the way of the data. You can even scroll the micrometer from the right side to keep the range values in view.
It is extremely fast, using an intuitive SPEED PAD with absolute and incremental sections.
It is comprehensive, using eight different modes. Sliding along the MODE PAD allows you to select one of the eight accurately described modes without resorting to small, difficult-to-select switches.
The diameter values on the outer hub of the micrometer can be shown in color-coded inch or metric values. The inner hub shows which drill you are selecting, such as, a fraction drill. The selected drill shows both the inch and metric diameter values in large font.
The METRIC TAP DRILL mode is unique. The US drill is shown for both the closest oversized and closest undersized drill. It even shows how close the inch drill is to the optimal metric tap drill size.
The actual size of the drill is shown with the micrometer barrels.
Holding the device in the palm of your hand, all the controls may be operated with your thumb.
You can set the device on the bench and still read the selected drill or tap values.
All selected drill diameters are shown in BOTH inch and metric values.
Even with over 700 drill sizes, selecting a drill is extremely fast, using the absolute and incremental sections of the SPEED PAD.
Sliding along the MODE PAD rotates a large wheel allowing you to select one of the eight modes.




