90s Jackson tremolo

[Valvehead]

Hi--can you help here ? These saddles are off an early 90s Jackson trem. As you can see they are numbered , two are not.
What do the numbers mean ?

i assume a certain position for string radius .....

2 are labeled 2

2 are labeled 1

2 are blank

[The Dude]

If I recall, it's to compensate for neck radius. Are some of them taller than others? The difference would be only slight.

[Valvehead]

If I recall, it's to compensate for neck radius. Are some of them taller than others? The difference would be only slight.

yes--i figured it out , they go blank--1--2--2--1--blank