Original one is not fit to my printer working zone, so this version is barely fit to 210x210mm. I found out that there is some reserve to reduce overall case size and took that advantages. Another major thing is that high of my Inclinometer is 20mm and this version of case is fit to it. Also I added some groove to side for easier opening case. Optimized for right-handed man - open case and take tool by right hand. Magnets is replaced too, in my version it is a pair of 6mm dia 2mm tall