The 100 series comparators are a range of heavy-duty sets of roughness specimens for workshop use, covering every common machining process.

Item Number	Machining Method		Number of Patches	Ranges of roughness values
				Ra (µin)	Ra (µm)	N-groups
115	Surface Grinding		8	1 to 125	0.025 to 3.2	1 to 8
116	Cylindrical grinding		8	1 to 125	0.025 to 3.2	1 to 8
117	Flat Lapping	Criss-cross / parallel	4	1 to 8	0.025 to 0.2	1 to 4
			4	1 to 8	0.025 to 0.2	1 to 4
118	Cylindrical lapping + superfinishing		8 (4+4)	1 to 8	0.025 to 0.2	1 to 4
119	Face turning		8	16 to 2000	0.4 to 50.0	5 to 12
120	Cylindrical turning		8	16 to 2000	0.4 to 50.0	5 to 12
121	End Milling		8	16 to 2000	0.4 to 50.0	5 to 12
122	Reaming and drilling		8 (4+4)	16 to 125	0.4 to 3.2	5 to 8
				63 to 500	1.6 to 12.5	7 to 10
123	Horizontal Milling		7	32 to 2000	0.8 to 50.0	6 to 12
125	Shaping (planing)		7	32 to 2000	0.8 to 50.0	6 to 12
126	linishing (belt sanding)		6	4 to 125	0.1 to 3.2	3 to 8
128	Vertical grinding		6	8 to 250	0.2 to 6.4	4 to 9
129	Grit blasting (angular particles)		6	16 to 500	0.4 to 12.5	5 to 10
058	Shot blasting (spherical particles)		6	16 to 500	0.4 to 12.5	5 to 10
131	Spark erosion (EDM)		7	16 to 1000	0.4 to 25.0	5 to 11
133	Hand filing		5	16 to 250	0.4 to 6.4	5 to 9
134	Castings		7	32 to 2000	0.8 to 50.0	6 to 12
135	Honing		6	2 to 63	0.05 to 1.6	2 to 7
136	Polishing		5	0.5 to 8	0.0125 to 0.2	0 to 4