Title.: Combo Compass Instrument For Surveying The present invention provides a combo compass instrument that comprises a whole circle bearing scale ring and a reduced bearing scale ring that are respectively concentrically positioned within a case. The combo compass includes a magnetic needle and a pointer that are pivotally fixed at the centre of the case. The pointer is attached to the magnetic needle at a predefined angle along North side thereof. A counterweight is attached along South side thereof in order to avoid the dip of the needle. The whole circle bearing scale ring and the reduced bearing scale ring respectively include a scale that graduates in a predefined direction thereby respectively having a predefined angular range configured thereon. The reduced bearing scale ring and the whole circle bearing scale ring facilitate automatic conversion of values of whole circle bearing into reduced bearing and vice versa. Figure of Abstract : Figure 1
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