I am looking for information on something that I believe is called a glide-slope indicator. What I know about it is:
It is labeled:
Weston Instruments Division
MODEL NO. 898 TYPE NO.15
MFR’S NO. 521273
The front has:
• A picture of a cross section of an airplane as viewed from the rear.
• The horizontal needle is labeled "U" and "D" which, I presume, means UP and DOWN, probably relative to the nose.
• The vertical needle is labeled "L" and "R" which, I presume again, means LEFT and RIGHT. Because airplanes tend to roll through turns I expect that this indicates roll direction rather than turn direction.
• There is also an indicator light labeled RELEASE.
The back has:
• A screw labeled “+” and one labeled “-“ which I expect are for application of 28 VDC standard aircraft power.
• There is also a 18 pin electrical connector.
• Eight of the pins seem to be connected together in pairs.
• Two pins (including one of the eight) are connected to each of the two previously mentioned screws.
• Three more pins (including two of the eight) are connected to the indicator light
• Four pins don't seem to be connected to anything
Thanks for any help understanding this.