Silverline Drill Gauge 1 - 13mm (598570)

Product Information

If the angle is too steep, the bit will bind in the material and break. The perfect angle for cutting through most materials is between 60 and 80 degrees. Point Gauge in Fluid Mechanics Depth Gauge – The depth gauge is used to measure the depth of a hole. It is composed of two sets of markings that indicate the depth of the hole and the size of the bit.

You can use the following charts and guides to help determine sizes for various types of screws as well: This chart rounds out the second half of these number gauge sizes down to #1, which is the largest drill bit size. Gauge Durability: Drill point gauges are built to last, with hardened steel and other durable materials used in their construction. This makes them ideal for use in industrial and commercial settings. I personally use JustAnswer, and they’ve gotten me out of a bind more than once. I can’t tell you how much time and money they’ve saved me.To use a thread pitch gauge, simply place it on the thread and match up the teeth on the gauge with the threads on the screw. Once you have found the correct tooth, you can then read off the pitch measurement from the scale on the side of the gauge. A point gauge consists of a metal tube with a small opening at one end and a Bourdon tube at the other end. The Bourdon tube is connected to a pointer that moves over a scale. The scale is divided into units of pressure. Number and letter gauges do not follow a formula or standard increments. They are loosely based on the Stubs Steel Wire Gauge, with gauge sizes that are similar (but not entirely identical) to that system. Thread pitch gauges cover a variety of thread forms and sizes including Metric 60°, Unified National (UN) 60° and British Standard Whitworth (BSW) 55°. Pitch for metric sizes is measured in mm whereas pitch for imperial sizes is measured in TPI (threads per inch). Leaf pictures range from 0.25mm up to 7mm or 4TPI to 62TPI.

If you’re an average weekend-warrior, you’ve probably stared at a screw or bolt for a few moments and wondered what size drill bit you would need. To use a drill point gauge, first select the appropriate size and type of drill bit for the job. Next, clamp the gauge in a vise or similar device so that it is level. Place the tip of the drill bit into one of the holes in the gauge and make sure that it is seated all the way into the hole. Drill gauges are tools that are used to measure the diameter of a drilled hole. The accuracy rating of a drill gauge is a measure of how precise the measurements taken by the gauge are. A higher accuracy rating means that the measurements taken by the gauge will be more accurate. Although they originated in the 19 thcentury, these gauges are still commonly used in the U.S. They are also seen in the UK to a lesser degree, having been largely replaced by metric sizes. Most other countries, especially in Europe, have abandoned them entirely in favour of metric systems.A drill gauge is a tool used to measure the diameter of a drill bit. It works by placing the drill bit into the gauge and adjusting the gauge until it fits snugly around the bit. The gauge is then adjusted to the closest number that fits the diameter of the bit. The numbers on the gauge indicate the size of the drill bit in millimeters or fractions of an inch. The R10 series uses a factor of 1.26 and contains the following sizes: M3, M5, M8, M12, M20 and M30 In between in these large tiny and large sizes are every equivalent bit size known to “man”, so you always have the exact size needed depending on what you’re project is calling for. Twist drills are designed for making small holes in thin materials such as wood or plastic. They have a spiral flute which helps remove debris as they’re being used. Chamfer gauges are measuring instruments used to read off the size or height of an internal or external chamfer. They are supplied in either a fixed, analogue or digital format. The analogue and digital chamfer gauges utilise a sliding scale for a wider range of chamfer sizes to be measured, whereas the fixed model offers a more basic design which is less accurate. 45°, 30° and 60° chamfer sizes are available and both metric and imperial measurements can be taken by the digital model. Digital chamfer gauges also feature optional wireless data output capabilities.

Keep hands away from drill bit – always keep hands away from the drill bit while the drill is in use. Each gear tooth gauge has a pressure angle (either 14.5° or 20° although other angles are available), which relates to the angle between the tooth face and the tangent line to the gear wheel. They are widely used by engineers due to their high accuracy and tough hardened stainless steel construction. Gear tooth gauges range from pitches as small as 0.35mm up to 12mm and beyond. Accuracy and leaf radius are the two main contributors when deciding which radius gauge to choose. Leaf sizes on radius gauges can start from as small as 1mm and go up to 40mm and beyond. In most general workshop use, accuracy will not be of major concern as it is usually to 2 decimal places. For inspection-grade workshops, however, high accuracy radius gauges will be required. Letter gauge drill sizes are used primarily in North American with A starting with the smallest size working 26 size increments to Z. Gauge Step 2: Make sure the drill point gauge is in the right position. It should be parallel to the surface of the drill bit.You can use the drill chart that follows this section to help convert sizes, or you can do the math yourself. To make things just a little more complicated, not all drill bit sizes are in North American fractional measurements. Tolerance Rating: The tolerance rating of a drill gauge is the maximum amount by which the measurement can differ from the actual diameter of the hole.