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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 -
English System
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SA 25.A
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Square Accessories: Individually or in
Sets as Stated Below
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Steel
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croblox®
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Contained in SA 25.A and
81 thru 88 piece gage
block sets when ordered
with Accessories
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Contained in 34 and
36 piece gage
block sets when ordered
with Accessories
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Half-Round Jaws**
.125 Radius
.250 Radius
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SA 1.
SA 2.
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.
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2
2
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2
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Straight Jaws**
.500 Thickness
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SA 3.
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SA 23.*
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2
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Scriber Point
Center Point .100 C/L
Base Block, .500" Thick
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SA 4.
SA 5.
SA 6.
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.
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1
1
1
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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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2
2
2
2
2
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Tie Rods:
3/4" Solid
1-1/2" Solid
2-1/4" Solid
3" Solid
4-1/2 to 6" Adjustable
6 to 9" 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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1
1
1
1
1
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11-3/4" Solid
15-3/4" Solid
19-3/4" 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.
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Internal Measuring Machine Jaws: SA 707.
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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
of hardened Steel material. The jaws are 1-inch
wide by 2-inches long with tightly controlled
thickness of .500".
Both side edges are lapped 90° square to the
gaging surfaces within 30 arc seconds, and
extend beyond the gage blocks in the
combination.
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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SA 707.
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WEBBER TOLERANCES:
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.500" Thick
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±10µin.
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Squareness of Sides
to gaging surfaces
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±30 sec
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GAGE BLOCK HEADER PAGE
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GB7
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©2018, Webber Gage Division, The L. S. Starrett Co, Westlake, Ohio , 44145
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