Plain Unisex T-Shirt Happiness The Dynamometer model is self-propelled

The Dynamometer model is self-propelled and requires no electricity during operation

and like all Ugears family models it assembles easily following step-by-step

NO BATTERIES REQUIRED: The rubber-band engine makes the model move forward at 2 speeds and move back at 2 speeds either

Construction Package Weight: 420 Grams

Assembling the Ugears’ V-Express Steam Train with Tender you will feel like an inventor engineer discovering for the first time the magic of the complex mechanism taking shape in your hands

Plain Unisex T-Shirt Happiness The Dynamometer model is self-propelledA Geek is an an expert or enthusiast or a person obsessed with a hobby or intellectual pursuit. To do our bit for our Geek Brethren, GeekDawn brings this unique product to you. GeekDawn is set to define Geek Fashion, with a range of Geek Clothing and accessories that include : Geek T shirts, Graphic T Shirts, Programmer T Shirts, Science T Shirts etc. cutting across various product dimensions i. e. Half Sleeves T shirts, Full Sleeves T shirts, Crop