These specialist drill bits are used for drilling centre holes at two different angles, 60 degrees and 90 degrees. They are commonly used to drill lathe centres and spotting drills, i.e.marking holes to guide twist drilling.

Getting some inexpensive DIY advice instantly vs hiring someone to come out and do the job…yeah, no comparison. Versatility: Drill point gauges are designed to be versatile, with a range of sizes and types available to suit different applications. FeatureIf 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 Accuracy: A drill gauge is not as accurate as calipers or micrometers, which are used to measure the diameter of drill bits and other cutting tools. A drill gauge may not accurately measure the diameter of drill bits or other cutting tools if the tool is not sharpened properly. If you have this set, or need to match, just use a simple formula to convert from metric to fractional inches, and vice versa:

The drill gauge is a simple but effective tool for measuring the diameter of a drill bit. It is easy to use and provides accurate measurements. It is an essential tool for anyone who needs to accurately measure drill bits for any application. Drill Point Gauge Uses Say, for example, a typical 29-piece set. In the following drill bit chart are the typical fractional sizes this kind of set would include. There are two main aspects that you need to consider when gauging a drill bit – the size and the type. The size of the drill bit is going to be determined by the size of the hole that you need to create. The type of drill bit is going to be determined by the material that you’re drilling through. 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. Jobber-length drill bits are the most common, with a length somewhere between 9 to 14 times the diameter.Step 2: Make sure the drill point gauge is in the right position. It should be parallel to the surface of the drill bit. Hook is adjustable and can be shortened or extended on either side of the rule, and may also be removed if desired 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. 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.

If you need any questions answered by a home improvement contractor or carpenter, you can chat with one now! Easy to Use: Drill point gauges are easy to use, with a simple and intuitive design that makes them perfect for both experienced and novice users. Accuracy Rating: Drill gauges typically have an accuracy rating of ±0.001 inch (0.025 mm) or better.Sets with even more varying drill bit sizes would include diameters smaller than 1/16″ or larger than 1-1/2″.

Taper Gauge – The taper gauge is used to measure the taper of a drill bit. It consists of several sets of markings indicating the taper and size of the bit. Use caution when drilling near combustible materials – always use caution when drilling near combustible materials such as wood, plastic, or paper.As you drill, keep an eye on the depth stop. When you reach the desired depth, stop drilling and remove your bit from the workpiece.