(b) a manual for selected producers of gear-reducing generators is downloaded. In germany, there are four series of gear-reducing machines produced by boserl, namely, the r-series tilt-reducing motors, the f-series parallel-axis tilt-reducing motors, the k-series spiral-pattern gear-reducing motors, and the s-series slash-retard snail snails. below is the k-series spiral-pattern gearGeared motorSamples of electric appliances, if selected in three other series, are available on the web site. Thank you for reading this article