The work presented in the thesis focusses on developing new and / or improving existing magnetic-field-based position sensing schemes along with suitable measurement circuitry. A novel displacement sensor that combines the benefits of the variable reluctance and Hall Effect sensing was designed, developed using structures that are easy to fabricate, and evaluated. In this, a permanent magnet was used as a source and Hall sensors were used to sense the change in thefield in the magnetic circuit. A modified analog-to-digital converter was used to interface the sensor and obtain a digital output. Later, this sensor was significantly modified using a planar coil-based approach, further improving the ease of manufacturability, compactness, and resolution. The modified sensor consists of two triangular-shaped PCB spiral coils that are stationary and a movable E-core. The coils were arranged in between the limbs of the E-core such that their inductances vary in a push-pull manner with change in displacement. The new sensor provides a linear output and it was designed to have negligible cross-axis sensitivity and insensitivity to parameters that would affect the system uniformly. Besides this, the thesis presents a new non-intrusive position sensor based on inductively coupled elements. This sensor together with a new wireless LC sensing scheme was proposed, for level measurement in sealed containers.The proposed non-intrusive sensor was designed such that the mutual inductances between the sensor coil and the readout coils vary as a function of the height of the liquid column. When the sealed tank is a metallic one, more care is required to realize a non-intrusive readout. An approach using C-shaped ferrite cores is presented.The sensing element inside the tank can be a reactance modulating element; e.g. capacitive or inductive.All the proposed sensors,in this work, possess (a) structures that are easy to manufacture, (b) an output nonlinearity 1%, (c) a scalable sensing range, and (d) negligible sensitivity to misalignments. All the above proposed sensors were tested, using suitable prototypes developed after a numerical or finite element-based functionality test and optimization.