What is the name of this Laboratory Instrument?
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Looks like a low-resolution abacus to me...
But seriously, if you want better answers, the more information that you can give, the easier we can try to help you. Where did you get the picture? What is the history of the picture? How big is it physically, etc.
Well, that hollow, unevenly-cut pipe there probably isn't a handle, I don't see it supporting all that weight for long especially with that weld, it also isn't centered and neither is the bar above it. If it's really a laboratory instrument, then it may be the only one like it...
Maybe a mischievous 9 year old made it, who knows?
My guess is a weight balancing shaft for something like a pendulum.
Separate names with a comma.