However the HSE report concluded that the Automatic Warning System ( AWS ) on both trains was probably working correctly, and that the shock of the collision had caused the electro-mechanical indicator to change.
2.
The display consists of a dot matrix of lights or mechanical indicators arranged in a rectangular configuration ( other shapes are also possible, although not common ) such that by switching on or off selected lights, text or graphics can be displayed.
3.
Tandy ( Radio Shack ) had developed a device using a flux gate sensor to give x & y components of the Earth's magnetic field which drove the orthogonal windings of a 360 degree mechanical indicator, for use as a car compass.
4.
Both required the operator to estimate the altitude of the aircraft and enter that into the device, then point an mechanical indicator, or sight, at the aircraft . The motion of the sight moved an indicator on a small Ordnance Survey National Grid map.
5.
Pilots confirming that their landing gear is down and locked refer to " three green " or " three in the green . ", a reference to the electrical indicator lights ( or painted panels of mechanical indicator units ) from the nosewheel / tailwheel and the two main gears.
6.
First of all, WW2 radars didn't have the same kind of displays that modern radars have, with dots representing targets-- what they had was an oscilloscope with a range scale, which showed the outgoing pulse at zero range, and return pulses at their respective ranges ( calculated using a basic pulse-delay system and displayed in simple analog format ), plus mechanical indicators for bearing and elevation.
मोबाइल