Put 60 on inner scale next to glide path angle (3º)on outer Scale.   o to 2,500 ft on outer scale (distance ‘off’) and read 50,000 ft on inner scale (distance ‘along’).  Put 50,000 ft on inner scale next to feet index on outer scale, go to naut m index on outer scale and read 8.2 nm.  

OR  Put 2,500 ft on inner scale next to feet index on outer scale, go to naut m index on outer scale and read 0.41 nm.  

Put 60 on inner scale next to glide path angle (3º)on outer scale.  

Go to 0.41 nm on outer scale (distance ‘off’) and read 8.2 nm on inner scale (distance ‘along’).