<p>Surface tension is a key parameter for understanding interfacial behavior in liquids and plays a crucial role in both fundamental scientific research and practical engineering applications. This paper presents a novel method for measuring surface tension, which is based on quantifying the capillary force between particles of equal diameter. The method employs a micro-thrust measurement system from aerospace engineering to directly measure the capillary forces and utilizes an approximate solution to the Young–Laplace equation for liquid bridges formed between spherical particles, establishing a quantitative relationship between capillary force and surface tension. Additionally, CCD industrial cameras were used to capture morphological changes during the stretching of the liquid bridge and analyze gravitational effects via the Bond number to validate the approximate calculation. Surface tension values were measured for dimethyl silicone oil, dodecane, and tetralin, with experimental results demonstrating good agreement with commercial instruments, exhibiting a maximum error below 5%. The proposed method requires minimal liquid volume and is independent of liquid density, offering a reliable and practical approach for surface tension characterization.</p>