David Law on Instagram: "Sony PVM-1371QM Had to calibrate this old monitor for a customer, released around 1985. It’s fully analogue and relies on manual adjustments with potentiometers, unlike later models that let you tweak settings through the OSD service menu. For a unit that’s nearly 40 years old, it was a fun project — the internals are still in great condition, with only minor cosmetic wear showing its age. #myretrogamehub #sony #pvm #calibration #tv #crt #collector #fun"