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GAGE BLOCK HEADER PAGE
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PREVIOUS
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ACCESSORY HEADER PAGE
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CLAMPS for Rectangular Accessories
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When rectangular style gage blocks are used with accessories, it is necessary to secure them
in an accessory clamp. Without the clamp, the forces encountered when using the
combination of gage blocks and accessories may break the combination apart.
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1. WHEN USING EXTERNAL CLAMPS, THE COMBINATION OF GAGE BLOCKS AND
ACCESSORIES MUST BE WRUNG TOGETHER BEFORE INSERTING THEM INTO THE
CLAMPS.
2. DO NOT RELY ON THE FORCE OF THE CLAMP TO SQUEEZE THE BLOCKS
TOGETHER. THIS IS UNRELIABLE AND MAY RESULT IN INACCURATE
MEASUREMENTS.
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3. IT IS IMPORTANT NOT TO OVERTIGHTEN THE SCREW. NEVER USE PLIERS.
OVERTIGHTENING CAN ALTER THE DIMENSIONS OF THE GAGE BLOCKS. NEVER
USE MORE PRESSURE THAN IS COMFORTABLE WITH THE THUMB AND INDEX
FINGER.
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The force of the clamp may compress the gage stack and change the length. Because the
amount of compression is unknown, the accuracy of measurement may be destroyed.
The screw on the clamp is a simple machine which magnifies force. A six pound force exerted
on the circumference of the screw head will result in 235 pounds of force on the gage blocks
and the clamp. It is estimated that a 4-inch block would be compressed by approximately
11 microinches.
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Available As: (Rectangular Style Only)
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Rectangular Style
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RA 5 0 to 1-1/2 capacity (0 to 38mm)
RA 6 1-1/2 to 4 capacity (38 to 100mm)
RA 7 4 to 6-1/2 capacity (100 to 165mm)
RA 8 0 to 12 capacity (0 to 300mm)
RA 9 0 to 18 capacity (0 to 450mm)
RA 10 0 to 24 capacity (0 to 600mm)
RA 14 0 to 36 capacity (0 to 900mm)
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GAGE BLOCK HEADER PAGE
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PREVIOUS
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ACCESSORY HEADER PAGE
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GB77
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©2018, Webber Gage Division, The L. S. Starrett Co, Westlake, Ohio , 44145
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