A system for measurement is provided. The system comprises a core optical module and a scanning interface module. The core optical module is configured to generate a light for generating signals for analyzing an object through the scanning interface module and detect a light including the signals from the object through the scanning interface module. The scanning interface module is changeable for each application and configured to connect with the core optical module by a light transferring unit to scan the object with the transferred light from the core optical module and to receive the light from the object to transfer to the core optical module.