Dual-pointer VOR/ILS indicator used with VIR-350/351 Navigation radios and GLS-350/350E Glideslope receivers. Similar to IND-351 but is mechanically improved with metal instead of plastic chassis.
The IND-351A uses two rectilinear meter movements, instead of pendulum, which makes it easier to read. This is especially nice when flying an ILS, since the needles stay perpendicular to each other. This feature helps the pilot to better determine the degree of correction needed to follow the approach accurately. The IND-351A does not contain a VOR/LOC Converter, which permits its use with a GPS.