Microscope reticles..which ones are useful?

[Scoper]

Curious to hear what reticles are useful for you and your work.

Thanks

[Scoper]

Anyone?

Thks

[Polymerase]

I suppose that depends upon what you are trying to achieve.
A micrometre scale reticle always comes in handy. Apart from that, you would probably get more answers if being more specific in describing what you are trying to do.