  Three visible lines of M1 transitions from In-like W were recorded using the
Shanghai permanent magnet electron beam ion trap. The experimental wavelengths
were measured as 493.84 $\pm$ 0.15, 226.97 $\pm$ 0.13 and 587.63 $\pm$ 0.23 nm
(vacuum wavelengths). These results are in good agreement with theoretical
predictions obtained using large-scale Relativistic Many-Body Perturbation
Theory, in the form of the Flexible Atomic Code.
