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Mitutoyo Dial Bore Gage
Series 511

 

These extremely popular Mitutoyo dial bore gages have gaging heads with interchangeable anvils and carbide-tipped contacts. Each bore gage comes supplied with a .0001" dial indicator and all the anvils required for the range of the tool. Spacers are included for small adjustments to the range. Roller guides on larger models keep the measuring head centered in the bore. The measuring contact is carbide.

Accuracy is .00008" and indication stability (which probably means repeatability - it's a new term for us) is .00004"

Optional extension rods can be attached for reaching into deep bores (see below for ordering information). These are considerably less expensive than other imported dial bore gages and, most significantly, they're usually in stock.

  • For replacement parts such as missing spacers and worn anvils, see page 72.

Mitutoyo bore gages are considerably less expensive than other quality dial bore gages. (You can find Chinese bore gages that cost even less but you should be forewarned that replacement parts will never be available for those gages.)

Check our brand comparison page for alternatives. Professional repair service is always available from Long Island Indicator Service (see page 30).

Important: the models shown on this page are not suitable for blind hole measurement. If you need to measure blind holes as opposed to through holes, please refer to page 56.

 

 

Dial Bore Gage .0001" with range of .7 to 1.4" shown above

Close-up of dial indicator in plastic housing. The mounting clamp and screw attaches the indicator to the bore measuring head.

 



 

Order no. (old number)

Measuring range

Probe depth

Indicator

Your discount price

511-212

.240" - .400"

2"

.0001"

additional information

511-206

.400" - .740"

4"

.0001"

additional information

511-751 (511-163)

.700" - 1.40"

4"

.0001"

additional information

511-752 (511-164)

1.40" - 2.50"

6"

.0001"

additional information

511-753 (511-166)

2.0" - 6.0"

6"

.0001"

additional information

511-932 (511-912)

special .70" to 6.0"

4" and 6"

.0001"

additional information

511-754 (511-187)

4.0" - 6.5"

6"

.0001"

not available at this time

511-755 (511-188)

6.5" - 10.0"

10"

.0001"

additional information

511-756 (511-189)

10.0" - 16.0"

10"

.0001"

additional information


You may check for additional specifications. availability and discounted pricing by clicking above.

Mitutoyo dial bore gage extensions

Optional extensions: unscrew the measuring head from the bore gage body and insert the extension between the two pieces. As a result, the measuring depth is now the original depth plus the extension. For example, 511-753 has a measuring depth of 6". If you add the 10" extension (9.84" to be exact) you will then have a usable measuring depth of close to 16 inches.

Bore gage measuring range

Optional extension length

Your price

4.92"
125 mm

9.84"
250 mm

19.69"
500 mm

29.53"
750 mm

39.37"
1 meter

.700" - 1.400"

953549

953550

953551

n/a

n/a

inquire

1.400" - 6.500"

953552

953553

953554

953555

953556

6.5" - 16"

953557

952361

953558

953559

953560

Mitutoyo product description for series 511 dial bore gage


The Mitutoyo 511-212 Dial Bore Gauge for Small Holes has a measurement range of 0.24 to .4" and is accurate to + or - 0.0002". It is precise to 0.0001". This direct-measuring gauge uses a two-point contact system to detect geometry problems such as ovality and tape, and carbide-tipped contact points offer extended wear and improved abrasion resistance. A rugged cover protects the dial indicator.

Bore gauges measure holes, or bores, in a workpiece. They can measure the interior diameter of a hole at any depth, while internal micrometers can only measure to the depth of their teeth. Bore gauges are typically calibrated with a setting ring and come in two types: simple and direct-measuring. Simple bore gauges are used with a caliper to transfer the hole measurement, while the more complex gauges take the measurement directly, and display it through a vernier, dial, or digital display. Bore gauges have a two- or three-point contact, indicating how many points on the gauge head touch the inside of the bore. Two-point contacts are better at measuring ovality, while three-point contacts are used to measure lobing or triangular form error. Pistol-grip bore gauges are used for fast, single-handed operation with repeatable results from one operator to another. Bore gauges can also be used in special applications, such as measuring threads, spline pitch diameters, and deep bores.

Mitutoyo manufactures precision measuring tools, metrology equipment, and related systems. The company, founded in Tokyo in 1934, formed Mitutoyo America Corporation in 1963 with headquarters in Aurora, IL.

this product description is provided by Mitutoyo USA

 

 

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