Surely Connie had relayed the message to him.
I immediately telephoned Detective Dick and relayed the news that Howie was missing.
Frederick appeared to be taken aback both by the story, and the speed at which Sarah relayed it.
If now the telescope be directed on the target and this level be brought to the centre of its run, the angle of sight can be read - if afterwards any range ordered is put on the sight and the gun truly layed, this bubble will be found in the centre of its run - so that if thereafter the target becomes obscured the gun can be relayed by elevating till the bubble is in the centre of its run, or at a completely concealed target the angle of sight can, if the range and difference of level are known or can be measured from somewhere near the gun, be put on by means of the micrometer screw, and the gun subsequently layed by putting the range in yards or degrees on the sight drum and elevating or depressing till the bubble is central.
We saw the results of this in the 2009 Iranian protests, when these devices captured and relayed powerful, real-time images of events.