Fig. 9: Experimental apparatus, setup, and sample assembly.
From: Spontaneous complexity in the dynamics of slow laboratory earthquakes

a Side view of the apparatus BRAVA with mounted sample; b top view of the experimental setup in scale; c ensembled double direct shear sample holder. S.D., H.D., and T.D. are the shear, horizontal, and thickness directions, respectively. All figures maintain the original proportions.