Superior Black

Superior Black Granite Surface Plates

Superior Black Granite Surface Plates minimize thermal expansion and have low water absorption rates to minimize rusting of precision gages. These plates have very little glare resulting to reduce eyestrain. They are available as Laboratory Grade AA, Inspection Grade A and Toolroom Grade B.

Features

Products

Other sizes available by request. No ledge and two ledge plates listed, four ledge plates available by request.
Grade AA Laboratory								No Ledge	Two Ledge
Surface Size		Thickness		Flatness Unilateral Tolerance		Weight		EDP	EDP
Inch	mm	Inch	mm	Inch	mm	Lb	kg	EDP	EDP
12 x 12	300 x 300	4	100	.000050	0.0012	61	28	85006	85007
12 x 18	300 x 450			.000050	0.0012	92	42	85010	85011
18 x 24	450 x 600			.000075	0.0019	183	83	85028	85029
24 x 24	600 x 600			.000075	0.0019	244	111	85036	85037
24 x 36	600 x 900	6	150	.000100	0.0025	549	249	85055	85056
30 x 48	750 x 1200	8	200	.000168	0.0043	1220	553	85082	85083
36 x 36	900 x 900	6	150	.000150	0.0038	824	374	85090	85091
36 x 48	900 x 1200	8	200	.000200	0.0050	1464	664	85110	85111
36 x 60	900 x 1500	10	250	.000250	0.0063	2288	1038	85118	85119
36 x 72	900 x 1800	12	300	.000300	0.0076	3294	1494	85128	85129
48 x 48	1200 x 1200	8	200	.000200	0.0051	1952	885	85136	85137
48 x 72	1200 x 1800	10	250	.000350	0.0088	3660	1660	85155	85156
48 x 96	1200 x 2400	12	300	.000500	0.0127	5856	2656	85173	85174

Other sizes available by request. No ledge and two ledge plates listed, four ledge plates available by request.
Grade A Inspection								No Ledge	Two Ledge
Surface Size		Thickness		Flatness Unilateral Tolerance		Weight		EDP	EDP
Inch	mm	Inch	mm	Inch	mm	Lb	kg	EDP	EDP
12 x 12	300 x 300	4	100	.000100	0.0025	61	28	85008	85009
12 x 18	300 x 450			.000100	0.0025	92	42	85013	85014
18 x 24	450 x 600			.000150	0.0038	183	83	85031	85032
24 x 24	600 x 600			.000150	0.0038	844	111	85038	85039
24 x 36	600 x 900	6	150	.000200	0.0050	549	249	85058	85059
30 x 48	750 x 1200			.000400	0.0102	915	415	85085	85086
36 x 36	900 x 900			.000300	0.0076	824	374	85092	95091
36 x 48	900 x 1200			.000400	0.0102	1098	498	85113	85114
36 x 60	900 x 1500	8	200	.000500	0.0127	1830	830	85120	85121
36 x 72	900 x 1800	10	250	.000600	0.0152	2745	1245	85131	85132
48 x 48	1200 x 1200	6	150	.000500	0.0130	1464	664	85138	85139
48 x 72	1200 x 1800	8	200	.000700	0.0177	2928	1328	85158	85159
48 x 96	1200 x 2400	10	250	.001000	0.0254	4880	2214	85176	85177

Other sizes available by request. No ledge and two ledge plates listed, four ledge plates available by request.
Grade B Toolroom								No Ledge	Two Ledge
Surface Size		Thickness		Flatness Unilateral Tolerance		Weight		EDP	EDP
Inch	mm	Inch	mm	Inch	mm	Lb	kg	EDP	EDP
12 x 12	300 x 300	3	75	.000200	0.0050	46	21	85012	85015
12 x 18	300 x 450			.000200	0.0050	69	31	85016	85017
18 x 24	450 x 600			.000300	0.0076	136	62	85034	85035
24 x 24	600 x 600	4	100	.000300	0.0076	244	111	85040	85041
24 x 36	600 x 900	4	100	.000400	0.0102	366	166	85061	85062
30 x 48	750 x 1200	6	150	.000700	0.0180	915	415	85088	85089
36 x 36	900 x 900			.000600	0.0152	824	374	85094	85095
36 x 48	900 x 1200			.000800	0.0203	1098	498	85116	85117
36 x 60	900 x 1500			.001000	0.0254	1373	623	85122	85123
36 x 72	900 x 1800	8	200	.001200	0.0304	2196	996	85134	85135
48 x 48	1200 x 1200	6	150	.000900	0.0229	1464	664	85140	85141
48 x 72	1200 x 1800	8	200	.001400	0.0355	2196	996	85161	85162
48 x 96	1200 x 2400	8	200	.002000	0.0508	3904	1771	85179	85180

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