Hopper window restrictors

A quick learner from New York, NY says:
Hi, looking to see if there is anything internally at latch that can be installed for hopper window to limit how much they open so that they are safe for toddler.
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Bob from SWISCO responded:

Hello there. That's quite the view. We don't have a sash stop made specifically for hopper windows. You might be able to use our 39-398 or 39-398SS, which serve the same function for casement windows. But I can't guarantee it will work for this. Take a look at both parts and see what you think. 

How to Install a Sash Stop Device on a Casement Window [1080p]
How to Install a Sash Stop Device on a Casement Window [1080p]
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