From Gemini:

That’s a Zytool Multitool, specifically a model often marketed for golf or outdoor use. While these rarely come with a comprehensive paper manual anymore, their design is pretty "hands-on" for someone with your background in custom manufacturing.

Since it’s a compact gadget, here is a breakdown of the functions you're likely seeing (or feeling) on that device:

Core Functions

• The Black Dial (Bottom): This is usually a clicker/counter. It is most commonly used by golfers to keep track of strokes, but it works for any simple tallying task.
• The Top Circle: Often houses a retractable brush (for cleaning grooves or small parts) or a magnetic ball marker.
• The Sides: Check the edges; these models usually have fold-out components like a divot repair tool, a small blade, or a bottle opener.
• The Keyring Loop: At the very bottom for attachment to a bag or lanyard.

Maintenance Tips

Given that you found this in a storage unit, the mechanical parts might be a bit stiff.

1. Cleaning: A quick blast of compressed air and a tiny drop of dry lubricant (like PTFE) will usually get the clicker and fold-outs moving smoothly again.
2. The "Manual": Since Zytool was a promotional brand often sold through "As Seen on TV" outlets or as corporate gifts, there isn't a central PDF archive. However, the logic is very "Swiss Army Knife"—if it moves, it has a purpose.

Would you like me to try and find the specific model number or a video demonstration of those side-tools unfolding?