Fostex A4 A8 VU meter 8248003000 so your unit should match

so your unit should match this photo

The Model 80 uses a dual plastic pulley the A8 and probably the whole A series uses a metal single pulley

in principle on some of the machines there was a steel pin on which was a bottom metal bush that locked onto the pin

from a B16 but may well have been used in their other top end machines

Fostex A4 A8 VU meter 8248003000 so your unit should matchLovely little Vu meter from the Fostex A4 and A8 machines thats becoming popular again. This meter is not backlit and relied on small lamps on a PCB inside the machine size approx 41mm high width same depth max 30mm allowing for the pins which could be bent if in a tight spot unit does not contain a bulb as was external on the A range