The rifle had a 3-leaf backsight
and a brass blade foresight dovetailed into the barrel.
Still more interesting is that Thomas' attack on Siger and Tempier's attack on Averroists had had its pre-history which proves that the combat against Averroists had in fact its roots in the rift between Franciscan and Dominican views and that certain of Thomas's propositions (his clinging to creatio in theology and his concession to eternity in philosophy), together with their more or less supposed Averroism, had exactly been in the backsight
of Franciscan friars (among these of Bonaventure) before the escalation of events in the 1270s (Gilson 2006:26-30).
Nowadays many scanners are equipped with total station-like functions such as centring over a known geodetic reference point, determining the instrument orientation to the backsight
target or by calculating the position and the height of the instrument by resection.
Segment readings are taken with the staffs showing the distance from the target line (backsight
and foresight) (Kosinski, 2011; Lyszkowicz, 2010), and based on them, differences in elevation between points can be calculated.
of one Militiaman's rifle caught his eye.
where [a.sub.m] and [p.sub.m]--backsight and foresight staff readings; [[delta].sup.a.sub.t] and [[delta].sup.p.sub.t]--temperature corrections for backsight
and foresight readings; [[delta].sup.a.sub.k] and [[delta].sup.p.sub.k]--calibration corrections for backsight
and foresight readings.
Shortly after the Boer War, a British Major General named Sir Earnest Swinton, using the pseudonym Lieutenant Backsight
Forethought, or BF, wrote The Defence of Duffer's Drift.
The tiny figures seen over the slide of the backsight
seemed a little larger, but also fewer at each successive volley.
These problems cover all regularly encountered navigation situations, as well as those that are only occasionally used and often forgotten, such as backsight
, shooting and unknown body, finding Venus in daylight, and storm avoidance.
Needless to say, for the practical purpose of laying a foundation, some sort of sightline on the ground would have to have been established, perhaps using a front and backsight
of some kind, but as a means of gauging the location of the pole the kind of device I am positing could conceivably have been employed.
The term backsight
is also used when turning angles.