Gauge Block Grade K Material steel 1. 0002mm, Gauge, Block Grade K Material steel 0. 9998mm, Gauge Block, Grade K Material steel 12. 5003mm, Gauge Block Grade K, Material steel 20. 0002mm, Gauge Block Grade K Material, steel 25. 0001mm, Gauge Block Grade K Material steel, 50. 0005mm, 75. 0004mm, 74. 9997mm, 100. 0005mm, 99. 9995mm, Single- ended plug gauge Dia 10. 509mm plus, or minus 0. 002mm, Single- ended plug gauge Dia 45. 968, mm plus or minus 0. 002mm, Single- ended plug gauge Dia, 90. 051mm plus or minus 0. 002mm, Setting Rod 25. 510mm, plus or minus 0. 003mm, Setting Rod 50. 215mm plus or, minus 0. 003mm, Setting Rod 75. 158mm plus or minus, 0. 003mm, Granite L Square size 1000X500X80mm