STEM LAB by UGears UTG0088 Arithmetic Kit Caboose it is not a typo

it is not a typo

Roundhouse 82087 HO Scale 50' Gondola CSX MOW CSXT 914707

as well as finished items

4V 7-cell NiMH battery (1))

STEM LAB by UGears UTG0088 Arithmetic Kit Caboose it is not a typoSTEM LAB by UGears UTG0088 Arithmetic Kit Assemble the Arithmetic Kit and discover how the Mechanical Addiator and Mechanical Multiplier work. The model kit comes with a QR code to the study guide about the mechanisms, the principal of their working, the main characteristics, formulas. It also includes interesting assignments. Dive into augmented reality and look at how Mechanical Addiator and Mechanical Multiplier work. Interact with the models via a