Precision Instruments PREM1R200HX .25 Inch Dr.- 30-200Lb.In.- Micrometer Click Torq Wrenc Patented roller release mechanism extends the life of the M series for hundreds of thousands of cycles Patented lock ring is easy to use Wide usable scale from 30 Lb.In. to 200 Lb.In. with 3% accuracy All steel construction for increased durability Made in the USA and ships in an American made plastic boxEngineered&#44; precision bearing surfaces extend