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GAGE BLOCK HEADER PAGE
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PREVIOUS
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GENERAL CATALOG
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Square Gage Block Accessories -
Metric System
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SA 25.MA
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Square Accessories: Individually or in Set as Stated Below
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Number of Steel
Accessories
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Steel
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croblox®
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Contained in SA 25.MA
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Half-Round Jaws**
3mm Radius
6mm Radius
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SA 101.
SA 102.
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2
2
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Straight Jaws**
12mm Thickness
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SA 103.
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SA 203.
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2*
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Scriber Point
Center Point 2mm C/L
Base Block, 12mm Thick
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SA 4.
SA 105.
SA 106.
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1
1
1
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Knurled Screw
Stud
Flat Head Screw
Long
Short
Slotted Nut
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SA 7.
SA 8.
SA 9.
SA 10.
SA 11.
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2
2
2
2
2
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Tie Rods:
19mm Solid
38mm Solid
57mm Solid
76mm Solid
114 to 152mm Adjustable
152 to 228mm Adjustable
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SA 12.
SA 13.
SA 14.
SA 15.
SA 16.
SA 17.
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:
1
1
1
1
1
1
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298mm Solid
400mm Solid
502mm Solid
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SA 18.
SA 19.
SA 20.
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NOTE: *croblox® jaws are not included as a standard item in accessory sets,
but may be added as an option at extra cost.
**Jaws are normally used in pairs, but are ordered INDIVIDUALLY.
Please order accordingly.
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Internal Measuring Machine Jaws: SA 711.
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These jaws perform the same function as the
straight jaws, but extend beyond the gage
surfaces in two directions: to the left and right.
For measurements that must have extreme
accuracy, this feature allows the user to
compensate for any parallelism error of the
gage blocks.
Designed to use with square style gage blocks,
Internal Measuring Machine Jaws are made
from hardened Steel material.
The jaws are 25.4mm wide by 50.8mm long with
tightly controlled thickness of 12.0mm.
Both side edges are lapped 90° square to the
gaging surfaces within 30 arc seconds, and
extend beyond the gage blocks in the
combination.
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SA 711.
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WEBBER TOLERANCES:
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12.0mm Thick
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±0.25µm
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Squareness of Sides
to gaging surfaces
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±30 sec
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When this combination of jaws and gage blocks are set on a surface plate, the finished sides
keep the center line of the gage blocks parallel with the surface plate. Also, because the sides
are slightly larger than the gage blocks between, the combination only rests on the true surfaces
of the jaws to prevent any possibility of the combination rocking on the surface plate. All these
additional features allow for greater control and more precise measurements.
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GAGE BLOCK HEADER PAGE
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GB18
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©2018, Webber Gage Division, The L. S. Starrett Co, Westlake, Ohio , 44145
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