ToolUSA Two Piece Economy Plastic Vernier Caliper Set - 3" And 6": TM-48200 For 6" -- 0.05mm 1/128 Inch Accuracy , Resolution: 0.001in. & 0.01mm For 3" -- Maximum measurement: 3.25 inches or 80 mm, Precision: 1/128 inch or 0.05 mm 0.05mm 1/128 Inch Accuracy Comes in a Blister Pack Lightweight Plastic