in the sheaves were 40 mm. wide to allow the couplings and splices to pass freely. The blocks 

 at the lower end of the boom, as well as that of the dynamometer, and the snatch block d 

 (1'late I) were provided with wrought iron-sling by which they where held up. 



The construction of the odometer b (Plates. I and II) was similar to that of the blocks 

 but with fixed spindle. Originally it had a circumference of about 0.83 metre, but gradually 

 this wore down to 0.80 metre. It was httecl in a cast iron bracket on a portable wooden block. 

 In one of the ends of the spindle there was a square hole to take the driving spindle of a 



.;. Frictional stopper. Scale : '/s- 



revolution counter and by this means the amount of rope, that was paid out, was registered. 

 It was necessary to make the stand of the odometer movable, in order to comply with the 

 varying position of the line. 



The frictional stopper L (Plates I and II and Fig. 3) fitted at Surabaja in October 1899, 

 consisted of a gunmetal cylinder supported on two brackets and provided with a doublé steel 

 friction brake regulated by a lever and adjusting screws. The rope was taken five times round 

 the cylinder. The chainstopper M (Plate t) was of the ordinary Harfieldtype with adjustable friction 



