Radius is from the center of a circle to the outer edge. Diameter is from the outer edge to the opposite outer edge, i.e., through the center. The diameter has twice the length of the radius.
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by using a caliperhttp://www.technologystudent.com/equip1/vernier3.htm
The diameter is the measurement of a line that goes right through a circle, through the centre point. In cases where we have a ring or some other such object with multiple circles, we would have an external diameter and an internal diameter. The internal diameter is the diameter of the inner circle. The external diameter is the diameter of the outer circle.
If the radius of a circle is twice the diameter. The outer diameter of a circle the size of a circle. 32.25 mm = 1.27 inches
the combined diameter of all the outer planets is 363,546 kilometers, or 84% the diameter of the sun.
Radius is from the center of a circle to the outer edge. Diameter is from the outer edge to the opposite outer edge, i.e., through the center. The diameter has twice the length of the radius.
The outer diameter of a 2" PVC pipe is approximately 2.375 inches.
Remembering that there is an inner core inside the outer core - the radius of the outer core/mantle boundary is about 3,400 km. (the diameter is twice the radius).
Consider going across the width of the pipe: Outer diameter = Thickness + Inner diameter + Thickness so 2*Thickness = Outer diameter - Inner diameter = 2.5 - 2.1 = 0.4 inches and therefore, Thickness = 0.2 inches.
The outer diameter of 1/2 inch PVC pipe is approximately 0.84 inches.
Jupider
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The inner diameter of a shop vac hose is typically around 1-1/4 inches, while the outer diameter is usually around 1-1/2 inches.
by using a caliperhttp://www.technologystudent.com/equip1/vernier3.htm
ForgingForging Blank send to MachiningPreturning Inner Diameter & widthCNC Ist Set up for Outer Diameter & WidthCNC II nd Set up for Outer Diameter & widthHobbing DOPBroaching Minor IDChamferingDeburring
To determine the hose size based on the outer measurement, measure the outer diameter of the hose using a caliper or ruler. Then, refer to a hose size chart or consult the manufacturer's specifications to find the corresponding hose size based on the measured outer diameter.