1 Pair of Used Vintage Machinist's Tools. "Old, Used Machinist's Tools: Grie Shop Pair Of Parallels/Shop Made 1-2-3 Blocks" Marked Grie Shop (no date). This used pair of Machinist's Tools comes in good condition. Tools show light wear, marks, and scratches from use over the years. Tools measure approx. 3" long by 2" wide by 1" thick.