A latency measurement system, the system comprising: an event generation device that generates an event used to measure system latency; a component test system comprising a test component this is to be tested for latency and a zero-latency laser indicator, wherein the test component is an inertial navigation system and the zero-latency laser indicator is a laser having an aperture arranged to project a linear laser projection through the aperture such that a laser line from the projection is imaged onto a surface that bears a visible horizontal reference line to form a zero-latency projected laser line indicator image, wherein both the test component and zero-latency laser indicator receive the event and in response respectively output a test component output signal and the laser projection; an electronics system including a multifunction display device, where the electronics system receives the test component output signal and displays a visible element on the multifunction display device, wherein the visible element is an image display device image and an artificial horizon image; a camera that generates a series of recorded images, where each recorded image contains an image of the surface that bears the visible horizontal reference line and the zero-latency projected laser line indicator image and an image of the visible element; and a processor that determines a time difference in the series of recorded images between a representation of an occurrence of the event in the surface that bears the visible horizontal reference line and the zero-latency projected laser line indicator image and a representation of the occurrence of the event in the image of the visible element, wherein the detected time difference represents a measurement of latency between the occurrence of the event represented by the zero-latency laser indicator and the occurrence of the event transmitted to the test component through the electronics system represented by the visible element on the multifunction display device, wherein determining the time difference further comprises: determining a first angle of the zero-latency projected last line indicator image with respect to the horizontal reference line and a second angle of the image display device image with respect to the artificial horizon image; and determining the time difference in accordance with an angular displacement of the first angle with respect to the second angle. an event generation device that generates an event used to measure system latency; a component test system comprising a test component this is to be tested for latency and a zero-latency laser indicator, wherein the test component is an inertial navigation system and the zero-latency laser indicator is a laser having an aperture arranged to project a linear laser projection through the aperture such that a laser line from the projection is imaged onto a surface that bears a visible horizontal reference line to form a zero-latency projected laser line indicator image, wherein both the test component and zero-latency laser indicator receive the event and in response respectively output a test component output signal and the laser projection; an electronics system including a multifunction display device, where the electronics system receives the test component output signal and displays a visible element on the multifunction display device, wherein the visible element is an image display device image and an artificial horizon image; a camera that generates a series of recorded images, where each recorded image contains an image of the surface that bears the visible horizontal reference line and the zero-latency projected laser line indicator image and an image of the visible element; and a processor that determines a time difference in the series of recorded images between a representation of an occurrence of the event in the surface that bears the visible horizontal reference line and the zero-latency projected laser line indicator image and a representation of the occurrence of the event in the image of the visible element, wherein the detected time difference represents a measurement of latency between the occurrence of the event represented by the zero-latency laser indicator and the occurrence of the event transmitted to the test component through the electronics system represented by the visible element on the multifunction display device, wherein determining the time difference further comprises: determining a first angle of the zero-latency projected last line indicator image with respect to the horizontal reference line and a second angle of the image display device image with respect to the artificial horizon image; and determining the time difference in accordance with an angular displacement of the first angle with respect to the second angle. determining a first angle of the zero-latency projected last line indicator image with respect to the horizontal reference line and a second angle of the image display device image with respect to the artificial horizon image; and determining the time difference in accordance with an angular displacement of the first angle with respect to the second angle.