Sorry, don’t mean to step on or steel a thread. However I was knocked over when I saw your picture posted here. In the back ground on top of the Marantz Turn table there is an arm with a small roller and a brush attached at the end. I have one of those. It came with my PL-530 turntable. I assume it is to set like an arm and run to clean records?? Could you please share how it’s used?
I also have one of those, but on my Thorens TD125. Here's a rather detailed description from Gramophone Magazine:
Bib Groov-Kleen Model 42
Manufactured by Bib Division, Multicore Solders Ltd., Hemel Hempstead, Herts.
THE Bib Groov-Kleen is the latest of many audio accessories to reach us from Multicore Solders Limited. Its specific function is to tease out and collect loose dust particles from a record surface during playing.
The business end consists of a brush of fine black hairs which are designed to winkle dust out of the grooves. Behind this (actually preceding it, so far as contact with the record is concerned) is a roller covered with black velvet material. This has the dual purpose of assisting the Groov-Kleen in tracking across the record, driven by the spiralling grooves, and clinging on to the dust. The roller does not revolve in use, but may be moved round from time to time to bring a fresh portion of its surface into use and so prolong its life. (Replacement roller and brush are available in Bib pack Ref. 42S.)
For normal clearing of dust from the roller, a small nylon brush is provided of the sort frequently supplied for stylus cleaning. (On the face of it, where reasonably clean records are being played, I can see no serious objection to using the same brush for both jobs—stylus and Groov-Klecn roller.) The roller is mounted on a wire pivot which carries extra weight in the shape of a wire outrider, to ensure steady tracking over record warps etc. independent of movement of the end brush.
The carrying arm is of anodised aluminium tubing with a counterbalance weight of steel giving (on the review sample as received) a downward playing pressure of 2-35 grams, In fact, the counterbalance is adjustable and a playing weight down to about 1 gram would be practicable. A hole in the arm fits over a vertical pivot rod. This is set into a moderately heavy pedestal which permits height adjustment over a range of about 11 to inches.
Bib claimed originally that the Groov-Kleen had been designed to fit "any make of turntable unit" but, since the introduction during the last few months of units with very shallow turntables, they have qualified this statement. A special model will soon be available for the Beogram 1200 and, in the interim, Bib will supply a shorter pedestal free of charge to any user of a new shallow turntable who has already acquired a Groov-Kleen.
The pivot rod of the standard model at its highest setting is just high enough for the Garrard 301 or 401 and, at its lowest, operates satisfactorily with a Garrard SP25 Mk. III. It is obvious that a considerable amount of thought has been given to the measurements of the arm and the base. The complete unit will, for example, fit the Garrard SP.25 Mk. III, which has one of the most compact decks, and the arm may be left in position when the cover is in place. The dimensions of the base of the pedestal enable it to be fitted to BSR/McDonald decks despite the rather large transit bolts which are situated at the top lefthand corner of these units.
To instal the Groov-Kleen on a turntable, it should be placed on its pivot and the pedestal moved around on the motorboard until the best position is found. This is determined by three factors: first, there must be no risk of the Groov-Kleen colliding with the pickup arm as they traverse the record. This probably means that somewhere in the top or bottom lefthand corner of the motorboard will be best. Second, the pedestal must be at that distance from the record spindle which causes the brush to pass over the centre exactly. Third, the spindle height must be adjusted to make the Groov-Kleen parallel to the record surface during playing.