Starrett 449 Series Depth Micrometer with Non-Rotating Blade

449 Series Depth Micrometer with Non-Rotating BladeMeasures the depths of holes, slots, shoulders, and projectionsBlade can be turned with the fingers and positioned at any angle relative to the base, but only moves perpendicularly in operation, permitting depth measurement of narrow shoulders without the blade rolling offCombination ratchet and speeder for uniform pressure and quicker adjustmentRing-type knurled lock nut for quick and sure lockingIncludes: (3) Measuring rods, (1) Padded case