File:Time machine.jpg

Summary
Illustration of the time machine from the Japanese guidebook for Mother, scans originally from Starmen.net, then cropped by me.

One of the three joke items sold by the mysterious teacher, unlike the last weapon and real rocket this one is exclusive to the Japanese Famicom version: it reverts the classroom to the state when Loid accidentally launched a bottle rocket. The localization and 1+2 port instead has the teacher selling a bomb.