![](/images/new-backgrounds/1293616/29361657x1.webp)
20 | ST40 Compass Instrument Owner’s Handbook |
2 Cut hole |
57 mm (2.25 in) cutter |
3 Peel protective sheets from gasket
4 Stick gasket to rear of instrument
20 | ST40 Compass Instrument Owner’s Handbook |
2 Cut hole |
57 mm (2.25 in) cutter |
3 Peel protective sheets from gasket
4 Stick gasket to rear of instrument