Caliper Reading [mm] =

Obtuse Angle° =

Elevation Angle A =

Tilt Angle° =

Obtuse Miter Angle B° =

Angle B Caliper Setting [mm] =

Angle A Grade/Slope Pct =

Angle A Rise =

Angle A Run =

Obtuse Angle° =

Caliper Setting [mm] =

Tilt Angle° =

Caliper Setting [mm] =

Elevation Angle° =

Caliper Setting [mm] =

a =

b =

Tilt Angle° =

Caliper Setting [mm] =

Rise =

Run =

Elevation Angle° =

Caliper Setting [mm] =

Number of Segments =

Segment Obtuse Angle A° =

Caliper Setting Angle A [mm] =

Segment Acute Degrees =

Width of Wide Leg [mm] =

Width of Narrow Leg [mm] =

Wide Leg Obtuse Angle A° =

Wide Leg Acute Angle° =

Narrow Leg Obtuse Angle B° =

Narrow Leg Acute Angle° =

Caliper Setting Angle A [mm] =

Caliper Setting Angle B [mm] =

Number of Sides =

Sides: Angle of Inclination° =

Miter Gage Acute Angle° =

Miter Gage Obtuse Angle A =

Caliper Setting Angle A =

Blade Tilt Angle° =

Blade Tilt Obtuse Angle B =

Caliper Setting Angle B =

Corner Angle =

Sides: Angle of Inclination° =

Miter Gage Acute Angle° =

Miter Gage Obtuse Angle A =

Caliper Setting Angle A =

Blade Tilt Angle° =

Blade Tilt Obtuse Angle B =

Caliper Setting Angle B =

Side 1 =

Side 2 =

Hypotenuse =

Diameter =

Radius =

Circumference =

side_a = 140.79923726

side_b = 140.79923726

L1 = 140.79923726

L2 = 140.79923726

H1 = 107.76307078

The Angle Master Pro by [https://www.bridgecitytools.com | Bridge City Tool Works] is a patented device that attaches to digital calipers (6"/152.40mm only). Once attached, the caliper becomes an adjustable hypotenuse and allows the user to read obtuse angularity with astonishing speed and accuracy.

See these [https://blog.bridgecitytools.com/2011/01/ | blog posts] for additional details.

Using the "mm" scale of the digital caliper, the AngleMaster Pro is capable of reading/setting 15,240 distinct angles over a 90 degree quadrant. It is fast, phenomenally accurate and will allow users to minimize mistakes and increase productivity. When properly attached, angularity is repeatable within 30 arc seconds, or less than eight thousandths of a degree.

The AngleMaster Pro reads, or sets obtuse angles and from a single obtuse angle, acute angles can be determined in several choices, ie,; elevation angle and tilt angles. Consequently all acute angles can be used to find the corresponding obtuse angle setting for the AngleMaster Pro.

Elevation Angle = the angle deviation from 180 degrees. For example, when the AngleMaster Pro is resting on a horizontal surface and set to an obtuse angle of 170 degrees, the angle between the flat surface and the arm of the AngleMaster pro is an ELEVATION ANGLE of 10 degrees.

Tilt Angle = the angle deviation from 90 degrees. For example, when the AngleMaster Pro is resting on a horizontal surface and set to 90 degrees, the TILT ANGLE is zero. When the AngleMaster Pro is resting on a horizontal surface and set to an obtuse angle of 100 degrees, the TILT ANGLE is 10 degrees.

Most digital calipers feature a resolution no finer than .01mm (.00039") and this can cause minor variations between sections of the program.

For example, if you enter 135 in the "Obtuse Protactor" to obtain the caliper setting for 135 degrees, the answer is 91.36. Yet if you enter 91.36 into the Angle Finder section, you will learn that this is actually 135.002 degrees. To avoid this conflict, you would need a minimum caliper resolution of 0.0000 mm which is unavailable as of this writing. These discrepancies are due to rounding errors and will not impact the overall accuracy of your settings (30 arc seconds or better).

Use this section to identify an unknown inside/outside obtuse angle. For inside obtuse readings, align the arms of the AngleMaster Pro against an unknown obtuse reference. Enter the caliper reading to learn the exact obtuse angle. Outside obtuse angles are obtained with a try square against one leg.

This section will also provide the corresponding Elevation Angle, Tilt Angle, and the Obtuse Miter angle which identifies the miter joint angles, and caliper setting needed to join two pieces to mirror the source obtuse angle.

The Elevation Angle Grade/Slope% identifies the grade/slope of the elevation angle. This feature can be used in conjunction with a bubble level to determine an unknown elevation angle which is then converted into grade/pitch slope %. For example, a caliper reading of 91.36 creates a 44.998 degree elevation angle=100% slope.

Use this section to determine the caliper setting for a known obtuse angle.

Use this section to determine the caliper setting for a known tilt angle. The program converts the tilt angle (always less than 90 degrees) into the corresponding obtuse angle.

Use this section to determine the caliper setting for a known elevation angle. The program will convert the acute angle into the appropriate obtuse angle.

Many angles are described in terms other than angularity, i.e,: rise/run, 1:8, etc. Example, a common angle for creating dovetails is the ration of 8:1. The Ratio Protractor identifies this as a 7.125 degree tilt angle.

Many projects involve rings made from identically shaped angled pieces. This section will calculate the correct obtuse angle needed for the two sides of each piece.

This section will calculate the miter gage/radial arm/chop saw arm settings and the corresponding blade tilt to create closed, compound miter projects. This section uses Angle of Inclination as part of the formula—this will create "bowl" shaped forms. If your desire is pyramidal shaped forms, you will need to "mentally" invert your form to determine the Angle of Inclination.

This section will calculate the miter gage/radial arm/chop saw arm settings and the corresponding blade tilt to for any corner angle. This section uses Angle of Inclination as part of the formula.

Input any two legs to calculate the third.

Input the diameter to calculate circumference.

Do you have a suggestion or comment that will help us improve this app? We listen and can be reached via email: [mailto:sales@bridgecitytools.com|sales@bridgecitytools.com]

Caliper Reading [mm]

Obtuse Angle°

Elevation Angle A

Tilt Angle°

Obtuse Miter Angle B°

Angle B Caliper Setting [mm]

Angle A Grade/Slope Pct

Angle A Rise

Angle A Run

Obtuse Angle°

Caliper Setting [mm]

Tilt Angle°

Caliper Setting [mm]

Elevation Angle°

Caliper Setting [mm]

a

b

Tilt Angle°

Caliper Setting [mm]

Rise

Run

Elevation Angle°

Caliper Setting [mm]

Number of Segments

Segment Obtuse Angle A°

Caliper Setting Angle A [mm]

Segment Acute Degrees

Width of Wide Leg [mm]

Width of Narrow Leg [mm]

Wide Leg Obtuse Angle A°

Wide Leg Acute Angle°

Narrow Leg Obtuse Angle B°

Narrow Leg Acute Angle°

Caliper Setting Angle A [mm]

Caliper Setting Angle B [mm]

Number of Sides

Sides: Angle of Inclination°

Miter Gage Acute Angle°

Miter Gage Obtuse Angle A

Caliper Setting Angle A

Blade Tilt Angle°

Blade Tilt Obtuse Angle B

Caliper Setting Angle B

Corner Angle

Sides: Angle of Inclination°

Miter Gage Acute Angle°

Miter Gage Obtuse Angle A

Caliper Setting Angle A

Blade Tilt Angle°

Blade Tilt Obtuse Angle B

Caliper Setting Angle B

Side 1

Side 2

Hypotenuse

Diameter

Radius

Circumference

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Bridge City Tools