Horizontal rotary: range 360?, grad0.05?.
Vertical incline: range 45?, grad 0.05?.
With vertical incline adjust knob.
Parallelism and squareness between A, B, C and D: 50_in/per inch, parallelism between D and E at 0?: 100_in/per inch.
Made of tool steel.
Hardness HRC56-58.

Dynabrade 98265 3/8" Female Coupler with 3/8" Male Plug Assembly
Insize ISR-CSE326, SURFACE ROUGHNESS SPECIMEN, 6pcs per set, 6928640376665
3M 65488, Pro Grade Precision Ultra Durable Universal Hole Sanding Disc, DUH5100TRI-10I, 5 inch UH, 100, 7100202876, 10 per pack 