intwenothor
Well-Known Hunter
So there are four different types of disc out there (I know this one is next to a Transcriptors brush but take my word for it that they are the same on some Michell).
1). The domed type pictured which is used for Stylus Brushes.
2). A smaller but similar disc used on the sweep arm brush.
3). A flat disc with bevelled edges of more or less the same diameter also used for stylus brushes (it's the same as the flat section at the bottom of the jetpack stabiliser).
4). A smaller but similar disc used for the sweep arm.
The two larger discs have the same internal thread diameter and the smaller discs have a smaller internal threaded hole but is the same on both small discs.
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