Carbide-tipped contact points for extended wear and improved abrasion resistance Graduation: .0005 inch with tolerance marker on indicator Easily adjustable with bezel lock for zero setting Self centering measuring heads Chrome plated handle and includes extension holder and fitted case The Fowler 54-646-400 X-tender Dial Bore Gauge Set has a measurement range of 1.4 to 6" and gradient spacing is 0.0005"/.001mm. A two-point contact system is used to detect geometry problems such as ovality and taper, and carbide-tipped contact points provide extended wear and improved abrasion resistance. The gauge is self-centering and includes an extension holder.Bore gauges measure holes, or bores, in a workpiece. They can measure the interior diameter of a hole at any depth, while internal micrometers can only measure to the depth of their teeth. Bore gauges are typically calibrated with a setting ring and come in two types: simple and direct-measuring. Simple bore gauges are used with a caliper to transfer the hole measurement, while the more complex gauges take the measurement directly, and display it through a vernier, dial, or digital display. Bore gauges have a two- or three-point contact, indicating how many points on the gauge head touch the inside of the bore. Two-point contacts are better at measuring ovality, while three-point contacts are used to measure lobing or triangular form error. Pistol-grip bore gauges are used for fast, single-handed operation with repeatable results from one operator to another. Bore gauges can also be used in special applications, such as measuring threads, spline pitch diameters, and deep bores.Fowler Precision manufactures inspection and measurement instruments such as electronic indicators, calipers, bore gages, and digital scales. The company, founded in 1946, is headquartered in Newton, MA. What’s in the box: ·Digital Bore Gage (with 2 measuring heads) ·1 2” extension ·4 anvil spacers ·Instructions ·Fitted case
I have used some of the more expensive bore gauges when working in an engine remanufacturing plant and this one ranks right up there with them. If your looking for an economical bore gauge for checking cylinders for taper ect, This will fit the bill nicely.
very good quality but the instructions could have been a little more detailed. the storage case is good and again the bore gauge is very well made. it would be nice if the indicator had a revolution counter but that would only increase the price.
