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Square Gage Block Accessories -
Metric System
SA 25.MA
Square Accessories:  Individually or in Set as Stated Below
   
Catalog
Number
Number of Steel
Accessories
Description  
Steel
croblox®
Contained in SA 25.MA
Half-Round Jaws**
  3mm Radius
  6mm Radius
SA 101.
SA 102.
.
2
2
Straight Jaws**
  12mm Thickness
SA 103.
SA 203.
2*
Scriber Point
Center Point 2mm C/L
Base Block, 12mm Thick
SA 4.
SA 105.
SA 106.
.
1
1
1
Knurled Screw
Stud
Flat Head Screw
   Long
   Short
Slotted Nut
SA 7.
SA 8.

SA 9.
SA 10.
SA 11.
.
2
2

2
2
2
Tie Rods:
   19mm Solid
   38mm Solid
   57mm Solid
   76mm Solid
   114 to 152mm Adjustable
   152 to 228mm Adjustable
:
SA 12.
SA 13.
SA 14.
SA 15.
SA 16.
SA 17.
.
:
1
1
1
1
1
1
   298mm Solid
   400mm Solid
   502mm Solid
SA 18.
SA 19.
SA 20.
.
.
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.
Internal Measuring Machine Jaws:  SA 711.
 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.  
SA 711.
WEBBER TOLERANCES:
12.0mm Thick
  ±0.25µm
Squareness of  Sides
  to gaging surfaces
  ±30 sec
 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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©2008, Webber Gage Division, The L. S. Starrett Co, Cleveland, Ohio , 44145
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