Uptech Engineering manufactures Alloy Steel made Ultra Parallel Blocks. Uptech Engineering H&G V Block with Clamp, H&G Precision Grinding Vice & Screw Type Grinding Vice, Permanent Magnetic Chuck, Sine Table`s, Magnetic Sweeper`s, Permanent Magnetic Lifter, Roller Bearing "V" Block, Magnetic Base, Heavy Duty Electromagnetic Chuck, H & G Try-Square & Straight Edge and Electroperm Magnetic Chuck. The Alloy Steel made Ultra Parallel Blocks are used for accurate supporting of jobs. The Alloy Steel made Ultra Parallel Blocks has hardness 60 ± 2 Rc. The Alloy Steel made Ultra Parallel Blocks have accuracy for parallelism, squareness and flatness of 0.005mm up to 200mm L & 0.010mm up to 450mm L.