Bore Gauges

Used to describe the collection of tools used for accurately measuring holes, bore gauges are a key tool in any engineer or machinist’s collection. Bore gauges come in a variety of forms and sizes to measure the diameter of a range of holes both easily and accurately.

Bore gauges are typically made of steel and are a precision tool made to be accurate within micrometres. Various forms of gauge are found for different levels of accuracy with more basic, solid gauges suitable for slotting into a hole to determine its size. These solid gauges are similar to a set of drill bits where the user has a range of pre-set sizes to work from.

Alternatively, expanding gauges are used for a more accurate measuring solution. Often found with either two or three anvils, these adjustable gauges can be set within a hole and then measured when removed to find the exact diameter. This style of gauge paired with a precision calliper will ensure you always have the most accurate measure.


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Description Price Type Material Number of Pieces Largest Diameter Smallest Diameter
RS Stock No. 785-7872
BrandRS PRO
MYR715.49
Each
units
Dial Bore Gauge - 1 160mm 50mm
RS Stock No. 683-0706
BrandRS PRO
MYR301.22
Each
units
Drill Hole Gauge Steel - 12.5mm 1.5mm
RS Stock No. 683-0696
BrandRS PRO
MYR286.94
Each
units
Drill Hole Gauge Steel - 5.9mm 1mm
RS Stock No. 264-3586
BrandRS PRO
MYR1,245.02
1 Set
Set(s)
Telescopic Bore Gauge Chrome 6 150mm 8mm
RS Stock No. 785-7884
BrandRS PRO
MYR1,730.10
1 Set
Set(s)
Drill Hole Gauge Steel 41 10mm 6mm
RS Stock No. 785-7881
BrandRS PRO
MYR741.49
1 Set
Set(s)
Drill Hole Gauge Steel 51 6mm 1mm
RS Stock No. 841-2524
BrandRS PRO
MYR679.25
Each
units
Drill Hole Gauge Steel 4 13mm 3mm
RS Stock No. 877-1804
BrandRS PRO
MYR2,773.49
Each
units
Drill Hole Gauge - 185 4.98mm 1.3mm
RS Stock No. 877-1801
BrandRS PRO
MYR1,283.49
Each
units
Drill Hole Gauge - 50 1.28mm 0.2mm
RS Stock No. 206-7876
BrandRS PRO
MYR56.39
Each
units
Taper Steel 1 16mm 1mm
RS Stock No. 795-9899
Mfr. Part No.511-921-20
BrandMitutoyo
MYR3,188.88
Each
units
Dial Bore Gauge - 3 150mm 18mm
RS Stock No. 539-312
Mfr. Part No.DY660
BrandStarrett
MYR546.69
1 Set
Set(s)
Drill Hole Gauge - 4 12.7mm 3.2mm
RS Stock No. 539-328
Mfr. Part No.DY455
BrandStarrett
MYR1,219.37
1 Set
Set(s)
Telescopic Bore Gauge Steel 6 152mm 8mm