  We present the analysis of stellar binary microlensing event
OGLE-2015-BLG-0060 based on observations obtained from 13 different telescopes.
Intensive coverage of the anomalous parts of the light curve was achieved by
automated follow-up observations from the robotic telescopes of the Las Cumbres
Observatory. We show that, for the first time, all main features of an
anomalous microlensing event are well covered by follow-up data, allowing us to
estimate the physical parameters of the lens. The strong detection of
second-order effects in the event light curve necessitates the inclusion of
longer-baseline survey data in order to constrain the parallax vector. We find
that the event was most likely caused by a stellar binary-lens with masses
$M_{\star1} = 0.87 \pm 0.12 M_{\odot}$ and $M_{\star2} = 0.77 \pm 0.11
M_{\odot}$. The distance to the lensing system is 6.41 $\pm 0.14$ kpc and the
projected separation between the two components is 13.85 $\pm 0.16$ AU.
Alternative interpretations are also considered.
