The RGA Serial Numbers on the Mark I attachments are preceeded by R.
The RGA Serial Numbers on the Mark II attachments are preceeded by RT.
On the Mark I models, the pedestal that supports the Universal Head is the fixed type and is not hinged.
On the Mark II models, the pedestal that supports the Universal Head is the hinged type.
↓ (13-04-14) This RGA was for sale on ebay, located in Sutton Coldfield.
It was described as:-
''This Mark 2 Radius grinding fixture was developed for use with the Clarkson Mark 2 Cutter Grinding Machine.
The Mark2 radius fixture was specificallyy designed to perform the following operations:-
1 - Ball nosing all slot drills including those gashed on the spiral.
2 - Grinding Radii on End Mills.
3 - Forming and regrinding Corner Rounding Cutters.
4 - Grinding Radii on all Side and Face Cutters.
It is in Excellent hardly used condition and is supplied in original wooden case and with original instructions and includes everything you see in the pics apart from the ball nose cutter which was just for demo purposes and is still in everyday use.
↓ (21-12-10) This RGA sold on ebay for 124 pounds.
The pedestal that supports the Universal Head is the fixed type and is not hinged.
Serial Number = 614
↓ This RGA belongs to Bernard Wright.
Serial Number = 495
When Bernard got the RGA a few of the parts were missing. He has been able to fabricate the missing parts to bring the RGA into use.
I believe he has some detailed CAD drawings that will enable you to build the RGA from scratch.
↓ (17-06-12) This RGA sold on ebay for 185 pounds, located in Chelmsford.
The pedestal that supports the Universal Head is the fixed type and is not hinged.
The Universal Head looks like it is homemade.
↓ (10-07-12) This RGA sold on ebay, located in Leeds.
This nice set was described as:
"Clarkson radius fixture - complete in original wooden case. Also includes some additional pieces.
Serial number R701.
Hardly used and in good working order".
