The 'Line Following Robot', a favourite of visitors because of its capacity to move forward and backward and circle in a particular diameter, was displayed at the gallery of Priyadarshini Planetarium in the state-run museum.
The robot was one of around 25 robots of different sizes and shape, being displayed at the gallery. It is a tiny robot, which one can place in a palm and operate. The exhibit was found missing on Friday and the museum management lodged a complaint with the local police in the evening itself, a top KSTM official said.
It was a working model, which can turn forward and backward and spin, and was displayed in a glass box with its edges tightened with screws, KSTM director Arul Gerald Prakash told PTI. Shortage of staff is a major difficulty in running various galleries, the official said, adding, they were planning to install cameras inside the rooms to prevent such incidents happening in the future.
Police said investigations were on to trace it.