Dimensionair Air Gaging/Dimentron Precision Bore Gage Catalog
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DIMENSIONAIR I AIR GAGING INSTRUMENTS DIMENTRON I PRECISION BORE GAGES - +

Mahr 22 Dimensionair© Air Gages Dimensionair® Air Gaging Instruments Experience with Gaging Technology Technical innovation and quality-oriented thinking are the core competencies of successful businesses. Both competencies are not possible without metrology. Measurement instruments verify research and development results and document product quality. Without continuous advancement of metrology there would be no technical progress. Mahr Federal has been an innovator of precision hole gaging since the first air gaging was introduced in the 1940's. Mahr Federal has perfected the Single Master...

33 Mahr Dimentron® Plug Gages Dimensionair© Air Gages Dimensionair® Air Gaging Instruments Why Mahr Federal Air Gaging? Table of Contents Mahr Federal has been an innovator in air gaging since it's introduction in the 1940's. With the Dimensionair system the accuracy is built into the readout and the tooling. With the new Universal Systems - precision magnification adjustments allow for the most linear two master systems available. Experience Over this period of time Mahr Federal has designed 100,000's of air gages - from the most basic air plug to complex automated air gaging systems. All...

Mahr 4 Dimensionair© Air Gages Dimensionair® Air Gaging Instruments Air Gaging is the inspection tool that allows you to measure many jobs faster, more conveniently, and more accurately than by other gaging methods. In the measurement of all hole conditions, air gaging is unsurpassed for speed and accuracy, while in checking any dimensional characteristic, air offers sufficient magnification and reliability to measure tolerances well beyond the scope of mechanical gages. Production workers do not require special training to use air gages. To check a hole, for instance, it is not necessary...

5 Mahr Dimensionair© Air Gages Dimensionair® Air Gaging Instruments Air gaging is a measuring system that uses airflow and/or air pressure to determine the size of measured part. With the laws of physics to make the measurement the system relies on the fact that flow and pressure are directly proportionate to clearance and react inversely to each other. The relationship between air pressure and distance of a restriction (workpiece) to the air escape (jets) can be plotted on a graph - (line a). As the distance between jets and work surface increases, the pressure decreases and the ratio...

Mahr 6 Dimensionair© Air Gages Additional advantages of Mahr Federal long gaging range — single master Dimensionair® Air Gages Dimensionair® Air Gaging Instruments The long measuring range of the Dimensionair system permits a smaller bodied air plug, which provides greater plug clearance. Even with greater clearance, there is no centralizing error. The total clearance between plug body and setting ring is detailed in the table below. Direct Benefits of Greater Clearance: The Dimensionair System is known as the One Master Air Gage because only one zero master is required for each size to be...

7 Mahr Dimensionair® Air Gaging Applications Dimensionair® Air Gages Dimensionair© Air Gages 1 Thickness or wall thickness measurement with jet air probe. 2 Diameter measurement of cylindrical through bores with air plug gage. 3 Diameter measurement of cylindrical blind bores with air plug gage. 4 Diameter measurement at a given distance from the face of a part. Most plugs can be supplied with a Stop Collar. 5 Diameter or thickness measurement with air snap gage. 6 Diameter measurement of cylindrical shafts with air ring gage. 7 Straightness measurement of a cylindrical bore with special...

Mahr 8 Dimensionair© Air Gages Dimensionair® Air Gaging Instruments Though most frequently used for diameter measurement, many other types of dimensional conditions can be checked more conveniently, more accurately, and more economically with the Dimensionair than with other types of gages. There are thousands of gaging applications successfully accomplished by air, here are a few representative examples of the more frequently encountered applications. The balanced system of the Dimensionair offers unique advantages in gaging certain dimensional conditions such as concentricity, squareness,...

9 Mahr Automatic Gaging Applications Squareness Flatness Dimensionair® Air Gaging Instruments Dimensionair© Air Gages Bore-to-face: Method A An air plug having offset jets is mounted on platen. Part is rotated 180 degrees. Comparison of total indicator readings shows relative squareness as compared to that of master or a nominal condition workpiece. A 2-jet air plug mounted on a precision platen is connected to a regular Dimensionair meter. Inset shows location of offset air jets on opposite sides of air plug. Bore-to-face: Method B Top and bottom jets on each side of air plug are channeled...

Mahr 10 Taper Gages Dimensionair© Air Gages Dimensionair® Air Gages Dimensionair® Air Gaging Instruments Two conditions most important in controlling taper are taper size and angle. Size is controlled by tolerance, and is, therefore, identical to a cylindrical l.D. or 0.D. Taper angle, on the other hand, can be controlled by at least three different methods: 1. Included angle or angle per side. 2. Taper per inch or per foot. 3. Controlling two diameters at specified datum locations. The use of tapers has never been more important than it is today. In the manufacture of tool holders and...

Dimensionair® Air Gaging Instruments 11 Mahr Dimensionair© Air Gages Through Hole and Blind Hole Air Plugs • Tooling is interchangeable without adjusting system magnification. • Federal Air Plugs have large clearance (see table below), allowing easy entrance into the hole being measured and greater measuring range. • Long life - wide clearance and hard chrome (optional) body extends useful life of the Air Plug. • Deep, recessed jets - Air jets are recessed into the plug body which protects them from damage. • Large jet size eliminates clogging from dirts and oils. When ordering Air Plugs...