3D MODEL DESCRIPTIONMultiplication table toy-All multiples of 1-10 and also each double number itself,Moving the indicators to the different numbers Directs the middle LED lamp to the correct result, the last column on the right is the number squared (double itself) A learning toy for children to learn the multiplication table, powered by 2 AAA batteries, a breaker, and 3 LED lamps, you can use a chain of lamps of 1 meter and 10 LED lamps, there is a link to the site with the product, The batteries need to be replaced with two AAA batteries, there are detailed assembly instructions, instructions for mounting the electrical wires, printing instructions including a screenshot of the filling of the CURA columns.Print the result number page on a regular home printer, you can print on a regular page, light passes through it and illuminates the result, the page is already the right size, note that you print 1-1, black or blue color will be excellent, (you need to cut it according to the triangle mark and glue it to the lid.) The LED lamps have wiring direction,so make sure to connect them like the original,use only 3 LED lamps,no problem cutting the others.All instructions are in the zipped folders attached, Based on the mechanical mechanism of a toy game called Educational Monkey, from 1916-1918. With various mechanical modifications and electrification of the system. if there are any more questions I will be happy to help.