About our Bowers XT500-BT Large Diameter 3-Point Mechanical Digital Bore Gauge (with Bluetooth) SETThe Bowers XT500 large diameter 3-point bore-gauge has been designed specifically for the measurement of internal diameters between 300 and 500mm. The newly designed constant-force digital readout ensures that the measuring pressure remains constant throughout the measurement whilst radiused measuring anvils provide optimum centralisation in the part. Anvil sets are supplied in 25mm steps (300-325, 325-350 etc) and each set has been manufactured to the exact tolerance size. The 300-325mm anvils are the master reference set and are used for setting the gauge in the setting ring. The other anvil sets are then fitted as required without further re-setting. This means that only one 300mm setting ring is required to set the gauge for all diameters in the full 300-500mm range of the instrument.

Flat wood or often referred to as Spade Bits, are perfect for making rough holes in wood. They come in larger diameters and are ideal for creating clearance holes cables, wires etc. but will leave a rougher finish and can cause splintering around the entry or exit of a hole if driven straight through the timber.

Hinge cutters are a power tool attachment used to cut clean, precise holes.  They are specially designed to drill flat-bottomed holes for cutting blind holes for fitting recessed cantilever door hinges in MDF and chipboard furniture, for example in fitted kitchen units and bedroom cabinets.  There's a centring point on the tungsten carbide-tipped head, which guides your drill for accurate results.

Cavity drill also known as installation drill bits, are for drilling through cavities during construction work, formwork, also for drilling blanks, beams, joists and panels made of soft and hard wood. These problem-solving drills are ideal for installing cables and enable holes to be drilled in timber up to 120mm thick through cavities of up to a metre.  Available from 8mm to 26mm diameter and 4 lengths 400mm, 600mm, 800mm and 1000mm. They will fit most standard 3 jaw drill chucks.

Features• Measuring range: 300-400mm• New constant-force digital readout• Single 300mm setting ring covers full range• Radiused anvils of tool-steel for optimum centering• Accuracy: 15µm• Repeatability: 3µm• IP67 electronics• Proximity output with built-in Bluetooth• Resolution 0.01/0.001mm. Metric/inch switchable• Fast accurate measurement• Extensions available for deeper bores• UKAS certificate with setting ring• Certificate of conformity with bore gauge• Supplied in fitted case

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What drill bit is used for wood? Drilling through wood is probably one of the most common applications you will come across. There are a few different types of drills for wood as listed below, each of which is designed for a different purpose.

Lip & Spur or Dowel drills, these specialised wood drills have a centre point with two raised spurs that help keep the drilling nice and straight.  They cut timber very fast when used in a power drill and leave a clean sided hole.

Forstner bits create holes with a flat bottom but will also drill through depending on the depth of the material in wood, plastic, plywood, MDF etc. A forstner bit is more preferred than a flat bit as they create holes with clean edges and better accuracy. Forstner bits are unique in their ability to drill overlapping holes, notches on the edges of a workpiece, and angled holes on the face of a workpiece (such as pocket holes, for example). The bit will cut even when the center spur is not engaging the workpiece. We have a range of sizes from 10mm  up to 50mm in diameter.

Size Range: 300.0mm - 400.0mm (12" - 16") Adjustment: DialReadout: Digital (Metric & Imperial)Accuracy (µm): 15Depth (mm): 120Set contains1off - 300.0mm - 325.0mm Bore Gauge (12" - 13")1off - 325.0mm - 350.0mm (13" - 14") Exchangeable Anvils1off - 350.0mm - 375.0mm (14" - 15") Exchangeable Anvils1off - 375.0mm - 400.0mm (15" - 16") Exchangeable Anvils1off - 300.0mm Setting Ring

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