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Your cart is empty.BudgetBuyer
2025-09-04 15:06:03
The Amazon shipping box arrived tie-up, and the wooden holder was missing the brand decal & was cracked from one end to the other. Most likely damaged in shipping. Also, the iron cylinder is 0.4g too heavy. The other 5 cylinders correctly weigh 100g each. I will be returning this item to Amazon, and re-ordering the set.
E. Steck
2025-08-31 11:16:33
I love this product. It came in good condition. It is really cool to see how density varies among different materials. I would recommend this to friends and family
TheOnion
2025-07-28 10:32:06
Update:I got a replacement rod sent to me. But, turns out they sent me an iron rod, not the zinc that was missing from the set! Seriously, this sort of mix-up is not only bad for customers, but also for this manufacturer's bottom line! Sad.They don't weigh exactly the same, and are not labeled (like reviews say before).Mine was missing a rod, hope the manufacturer sends it to me.Plastic cover was badly torn, so maybe it fell out.
Beheld the Serpent
2025-07-21 12:34:31
Great demonstration of like mass with differences in sizes and densities
M. Millen
2025-05-05 12:17:55
Hmmm. When I received this item I only had 4 on the cylinders. I’m not happy honestly.
Salem Green
2025-04-19 18:20:32
I work in a metrology lab and thus is a great conversation piece. Each weighed 100g +/-0.5g worst case. The only detractor was the slugs were a bit beat up. But it didn't effect weight.
Jon L. Springer
2025-04-05 10:10:22
Exactly as described
Brody Hurford
2024-11-23 14:37:16
awesome
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