Additive constant or stadia constant Calculator

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✖Focal length of telescope is measured as the distance from the main optic to the point where the image is formed.ⓘ Focal length of telescope [f]			+10% -10%
✖Distance from center of spindle to center of objective lens.ⓘ Distance [c]			+10% -10%

✖Stadia constant is integer ratio between the difference of the rod readings and the distance from the telescope to the rod.ⓘ Additive constant or stadia constant [C]

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Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

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Alithea Fernandes

Don Bosco College of Engineering (DBCE), Goa

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< 5 Other formulas that you can solve using the same Inputs

Stadia distance from instrument spindle to rod

Stadia distance=Intercept on rod*((Focal length of telescope/Rod intercept)+Stadia constant) GO

Intercept on rod between two sighting wires

Intercept on rod=Stadia distance/((Focal length of telescope/Rod intercept)+Stadia constant) GO

Polar moment of inertia from shear stress and torsional moment

Polar moment of inertia=Torque*Distance/Shear Stress GO

Shear Stress due to torsional moment

Shear Stress=Torque*Distance/Polar moment of inertia GO

Torsional moment from shear stress

Torque=Shear Stress*Polar moment of inertia/Distance GO

Additive constant or stadia constant Formula

Stadia constant=(Focal length of telescope+Distance)
C=(f+c)

More formulas

Horizontal distance between center of transit and rod GO

Vertical distance between center of transit and rod intersected by middle horizontal crosshair GO

Stadia distance from instrument spindle to rod GO

Intercept on rod between two sighting wires GO

What is additive constant ?

The constant (f + c) =C is known as the additive constant of the tacheometer but the latter one is made zero by using an anallatic lens in the instrument.

How to Calculate Additive constant or stadia constant?

Additive constant or stadia constant calculator uses Stadia constant=(Focal length of telescope+Distance) to calculate the Stadia constant, The Additive constant or stadia constant formula is defined as a fixed, integer ratio between the difference of the rod readings and the distance from the telescope to the rod. Stadia constant and is denoted by C symbol.

How to calculate Additive constant or stadia constant using this online calculator? To use this online calculator for Additive constant or stadia constant, enter Focal length of telescope (f) and Distance (c) and hit the calculate button. Here is how the Additive constant or stadia constant calculation can be explained with given input values -> 4 = (2+2).

FAQ

What is Additive constant or stadia constant?

The Additive constant or stadia constant formula is defined as a fixed, integer ratio between the difference of the rod readings and the distance from the telescope to the rod and is represented as C=(f+c) or Stadia constant=(Focal length of telescope+Distance). Focal length of telescope is measured as the distance from the main optic to the point where the image is formed and Distance from center of spindle to center of objective lens.

How to calculate Additive constant or stadia constant?

The Additive constant or stadia constant formula is defined as a fixed, integer ratio between the difference of the rod readings and the distance from the telescope to the rod is calculated using Stadia constant=(Focal length of telescope+Distance). To calculate Additive constant or stadia constant, you need Focal length of telescope (f) and Distance (c). With our tool, you need to enter the respective value for Focal length of telescope and Distance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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