Parallel Sets

Matched Sets Sets contain matched pairs of parallels All parallels are hardened and precision ground Parallelism accuracy 0.0002in Matched pair accuracy 0.0003in Set Contents Type Length Width Height 10 pair set 6in 1/8in 1//2 , 5//8, 3//4 , 7//8, 1, 1 1//8, 1 1//4 , 1 3//8, 1 1//2 , 1 5/8in 4 Pair set 6in 1/2in 1, 1 1//4 , 1//2 1//2 , 1 3/4in Supplied with Fitted polypropylene storage cases Parallels, Surface Finish & Hardness Surface Finish Any machined component has a surface geometry which consists of three basic elements: Form or Curvature - Whether the surface has irregular bumps or dimensional changes Waviness - Whether the surface has regular repetitive ripples or patterns (e.g. milling patterns) Roughness - The shapes or irregularities that are smaller than, and form part of the waviness pattern (e.g. material micro-structure) Waviness and roughness are traditionally the most difficult elements to measure when comparing surface finish, however, they have a radical effect on the performance of the finished component. Variations will cause aesthetic appearance changes, component wear variations, oil retention variation etc. Many manufacturers therefore specify a range of roughness values which their components should be manufactured to, often expressed as: Ra, Rq (RMS), RzDIN, Ry, Sm,mm.

The RS Pro adjustable parallel set, used for checking, marking or positioning work. Consist of two precision ground pieces which slide smoothly on each other. Supplied in Vinyl Pouch 6 Piece Set includes sizes: 3/8” - 1/2” 1/2” - 11/16” 11/16” - 15/16” 5/16” - 1-5/16” 1-5/16” - 1-3/4” 1-3/4” - 2-1/4”

Matched Sets Sets contain matched pairs of parallels All parallels are hardened and precision ground Parallelism accuracy 0.0002in Matched pair accuracy 0.0003in Set Contents Type Length Width Height 10 pair set 6in 1/8in 1//2 , 5//8, 3//4 , 7//8, 1, 1 1//8, 1 1//4 , 1 3//8, 1 1//2 , 1 5/8in 4 Pair set 6in 1/2in 1, 1 1//4 , 1//2 1//2 , 1 3/4in Supplied with Fitted polypropylene storage cases Parallels, Surface Finish & Hardness Surface Finish Any machined component has a surface geometry which consists of three basic elements: Form or Curvature - Whether the surface has irregular bumps or dimensional changes Waviness - Whether the surface has regular repetitive ripples or patterns (e.g. milling patterns) Roughness - The shapes or irregularities that are smaller than, and form part of the waviness pattern (e.g. material micro-structure) Waviness and roughness are traditionally the most difficult elements to measure when comparing surface finish, however, they have a radical effect on the performance of the finished component. Variations will cause aesthetic appearance changes, component wear variations, oil retention variation etc. Many manufacturers therefore specify a range of roughness values which their components should be manufactured to, often expressed as: Ra, Rq (RMS), RzDIN, Ry, Sm,mm.