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Precision Tools - Gage Blocks


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Brown & Sharpe Gage Blocks - Inch “Super-A” Jo-Block® Sets 

• Manufactured from Class 1 steel to Grade 2 (A+) accuracy
• Each block is certified, calibrated, and serialized
• Every set includes a certificate of calibration and traceability,
assuring you of accuracy and continuing reliability
• Set comes complete with its own fitted mahogany case

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Fowler - Micrometer Inspection Sets Grade 2 Ceramic / Steel 

• 11 Pc. rectangular sets including two optical flats
• Assists in meeting both Federal specification GGG-C 105c and ISO 9000 requirements
• Contains one block of each of the following sizes: .0625, .100, .125, .200, .250, .300, .500, 1.000 and 2.000"
• TWO OPTICAL FLATS that vary in size by .0125" which allows checking anvil faces at half resolutions of spindle for measuring flatness
• Supplied with fitted wooden case

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Fowler Rectangular Gage Blocks 

• Each block is rectangular steel, hardened to 65 RC, stress relieved, lapped to accurate size, parallelism and flatness, then carefully inspected and marked for size
• All blocks are individually serialized and calibrated, with individual certification traceable to the National Institute of Standards and Technology
• Grade 2 tolerance = +4, -2 millionths for sizes up to 1"
• Grade 3 tolerance = +8, -4 millionths for sizes up to 1"
• Economy/Shop Grade tolerance = ±50 mil

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Mitutoyo 10 Piece Ultra Thin Rectangular Gage Block Set 

• Includes certificate of accuracy traceable to NIST
• Grade 2 (A+1)
10 Piece Set Includes:
.0005, .010, .015, .020, .025, .030, .035, .040, .045 and .050"

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Mitutoyo 14 Piece Rectangular Gage Block Accessory Set 

• Use these accessories to expand the variety of rectangular gage block applications
• By assembling the items in the set, your gage blocks are easily and quickly changed into a precision measuring system

14 Piece Set Includes:
• 2.24, 4, 6, 10" Holders
• 1.375" Holder base
• .011, .200, .250" Half round jaw - 2 each
• Scriber point
• Center point
• Triangular straightness edge 4"

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Mitutoyo 9 Piece Rectangular Gage Block Set for Micrometer Inspection 

• Grade 3
• Each block is serialized and set includes a certificate of accuracy traceable to NIST
• Contains one block from each of the following sizes: .0625, .100, .125, .200, .250, .300, .500, 1.000 and 2.000"
• Supplied in fitted hardwood case

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Mitutoyo Individual Gage Blocks - Grade 2 

• Each Mitutoyo and Starrett block is serialized and supplied with a certificate showing the deviation in millionths

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Mitutoyo Steel or Ceramic Rectangular and Square Gage Block Sets - Rectangular Gage Block Sets 

• All blocks are furnished with a free certificate of calibration traceable to NIST
• Each of the blocks is manufactured and calibrated to MITUTOYO specifications which meets or exceeds Federal Specifications GG-G-15C
• Each block is serialized regardless of the grade so it can be easily identified when the block is recalibrated and certified at a later date

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Mitutoyo Steel or Ceramic Rectangular and Square Gage Block Sets - Square Gage Block Sets 

• All blocks are furnished with a free certificate of calibration traceable to NIST
• Each of the blocks is manufactured and calibrated to MITUTOYO specifications which meets or exceeds Federal Specifications GG-G-15C
• Each block is serialized regardless of the grade so it can be easily identified when the block is recalibrated and certified at a later date

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Starrett Individual Gage Blocks - Grade 2 

• Each Mitutoyo and Starrett block is serialized and supplied with a certificate showing the deviation in millionths

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Starrett Webber Gage Block Sets - Rectangular Block Sets - Combination Croblox® and Steel Sets 

Another Starrett Webber first: offering a gage block set with Croblox (chrome carbide) thru 1" and steel in 2", 3", and 4" sizes. This combination of materials provides long wearing Croblox in the blocks most commonly used, providing a complete set of blocks at an economical price
• MADE IN USA

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Starrett Webber Gage Block Sets - Rectangular Block Sets - Steel Gage Block Sets 

Webber Division Gage Block shipments include a standard certification which verifies traceability to the National Institute of Standards and Technology (NIST). For individual readings on each block however, the sets with certificate of inspection must be ordered.

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Starrett Webber Gage Block Sets - Square Block Sets - Combination Croblox® and Steel Sets 


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Starrett Webber Gage Block Sets - Square Block Sets - Steel Gage Block Sets 


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Starrett Webber Steel Gage Block Sets - Rectangular Steel

  • Now NVLAP accredited. 1st in the USA!
  • High-grade steel gage blocks for day to day use in shop floor environments.
  • All Starrett/Webber gage blocks meet or exceed all known specifications.
  • Webber Division gage block shipments include a standard certification which verifies traceability to the National Institute of Standards and Technology.
  • Sets are furnished with a commercial Certificate of Calibration, providing individual readings on each block, and etched serial numbers.
  • Grade: 2 (Formerly Grade A+)
  • Tolerances in millionths of an inch: 1" = +4-2, 2" = +8-4, 3" = +10-5, 4" = +12-6.

#87592913 Set Includes:
  • 9 Blocks .1001" through .1009" (steps of .0001")
  • 49 Blocks .101" through .149" (steps of .001")
  • 19 Blocks .050" through .950" (steps of .050")
  • 4 Blocks 1.000" through 4.000" (steps of 1")

#87592939 Set Includes:
  • 1 Blocks .0625", .100", .125", .200", .250", .300", .500", 1.000", 2.000".





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Starrett Webber Steel Gage Block Sets - Square Steel

  • Now NVLAP accredited. 1st in the USA!
  • High-grade steel gage blocks for day to day use in shop floor environments.
  • All Starrett/Webber gage blocks meet or exceed all known specifications.
  • Webber Division gage block shipments include a standard certification which verifies traceability to the National Institute of Standards and Technology.
  • Sets are furnished with a commercial Certificate of Calibration, providing individual readings on each block, and etched serial numbers.
  • Grade: 2 (Formerly Grade A+)
  • Tolerances in millionths of an inch: 1" = +4-2, 2" = +8-4, 3" = +10-5, 4" = +12-6.

#87592844 Set Includes:
  • 9 Blocks .1001" through .1009" (steps of .0001")
  • 49 Blocks .101" through .149" (steps of .001")
  • 19 Blocks .050" through .950" (steps of .050")
  • 4 Blocks 1.000" through 4.000" (steps of 1")

#87592845 Set Includes:
  • Same as above plus the following accessories: half-round jaws, scriber point, 2 knurled screws, 2 studs, 4 flat head screws and 6 tie rods.





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XACT 8 Piece Large Gage Block Set 

8 Piece Set Includes:
• 5, 6, 7, 8, 10, 12, 16, 20"
• Each set is calibrated* in the US and supplied with a calibration certificate traceable to NIST, showing the deviation of each block in millionths

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XACT 81 Piece Gage Block Set and Sine Bar Combination 

Gage Block Set:
• 81 Piece rectangular steel
• Grade B
• Fitted wood case

brown & sharpe Sine Bar:
• See specifications at left

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XACT Carbide Rectangular Gage Block Sets 

• Provides maximum durability under the most demanding conditions
• Especially recommended when exposure to abrasives may occur
• Outlasts and outperforms regular steel blocks every time
• Supplied with a certificate guaranteeing that each block is within the grade tolerance. This certificate does not show the individual deviation of each block
• Includes fitted wood case

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XACT Gage Block Accessories 

Base Block - Gage Block mounting surface lapped flat and parallel with base. Base size: 4" x 2-3/4" x 1.7". Accuracy: +/-.0002" height

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XACT Individual Gage Blocks - Grade 2 

• Each Mitutoyo and Starrett block is serialized and supplied with a certificate showing the deviation in millionths

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XACT Individual Gage Blocks 

• Each Mitutoyo and Starrett block is serialized and supplied with a certificate showing the deviation in millionths

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XACT Individual Space Blocks 


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XACT Premium Rectangular Gage Block Sets - NIST Certified 

• Steel sets are produced from a special material featuring high carbon and chrome content
• Stress relieved and heat treated to 65 Rc; extremely wear-resistant
• Mirror-polished surface finish provides exceptional wringing characteristics
• Individual serial numbers on each block, regardless of grade
• Manufactured in a temperature controlled environment to provide precise and reliable accuracy
• All blocks meet or exceed Federal Specification GGG-G-15C for flatness, parallelism and size, and conform to MIL-STD-45662A
• Includes a complete certificate of calibration traceable to the National Institute of Standards and Technology, showing the deviation in millionths of each block
• Complete with American-made wooden fitted case
• Covered by a 1 full year guarantee against any defects in workmanship

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XACT Rectangular Carbide 81Pc Gage Block Set

Tungsten carbide has a much superior coefficient of thermal expansion as compared to steel. Also tungsten carbide’s superhard properties will not bur, have outstanding wear resistant qualities and will outlast steel blocks many times over. Unlike other sets, all blocks are carbide, including the 2", 3" and 4" blocks. 81 Pieces, grade 3 (+.000008/-.000004). Meets or exceeds Federal Specification GGG-G-15C.


Set Includes:

  • 1 Block - .050"
  • 10Blocks - .100" - .1009" in .0001" steps.
  • 49Blocks - .101" - .149" in .001" steps.
  • 17Blocks - .150" - .950" in .050" steps.
  • 4Blocks - 4.000" in 1.000" steps.





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XACT Rectangular Steel Gage Block Sets

  • Each block is steel and hardened to 65RC, stress relieved, lapped to accurate size, parallelism and flatness, then carefully inspected and marked for size designed to meet close tolerance.
  • Each set includes standard sizes.
  • Each block conforms to National Bureau of Standards.


Accuracy:
  • Grade B +50/-50 Millionths.
  • Grade 3 (A & B) +8/-4 Millionths.
  • Grade 2 (A+) +4/-2 Millionths.





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XACT Square Gage Block Sets 

• Supplied with a certificate guaranteeing that each block is within the grade tolerance. This certificate does not show the individual deviation of each block
• Includes fitted wood case

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XACT Standard Rectangular Gage Block Sets - Workshop Grade B 

• Ideal for those who need a competitively priced B grade set
• All blocks are manufactured to the same high standards as our premium sets
• Each set is supplied with a certificate guaranteeing that each block is manufactured to meet or exceed Federal specification GGG-G-15C, and is within the grade B tolerance (±.000050). This certificate does not show the individual deviation of each block
• Each set is provided in a fitted wood case


Servicing Industry Since 1968

Have a Question or Need Technical Assistance? For Personal Service Click Here to contact a NSS dealer for your state.