PYRAMID GRANITE & METALS, INC.

660 Superior St. • Escondido, CA 92029 • Ph (760) 745-6309 • Fax (760) 743-2803
1-800 874-5441 Nationwide and Canada • sales@PyramidGranite.com
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 Granite Accessories Worldwide Shipping
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Metal Weldments & Support Stands Calibration & Certification Quality Policy
Vibration Dampening Systems Design Assistance President's Comments

Precision Granite Surface Plates

PROPERTIES

* Uniform hardness

* Accurate under load

* Vibration absorbent

* Easy-to-clean

* Rustproof, noncorrosive

* Nonmagnetic

* Thermal stability

* Plates may be easily resurfaced

* Warp-resistant

* Low porosity

* Nonabrasive

OVERALL FLATNESS
The overall flatness specifications of Pyramid Granite & Metals Inc. products meet and surpass the requirements set forth in Federal Specification GGG-P-463c. This publication defines the three standard grades of tolerance for surface plates as follows:

     AA – Laboratory Grade: For high precision operations in constant temperature gaging rooms and metrology departments.

     A – Inspection Grade: For general use in quality control areas.

     B – Toolroom Grade: For shop work and production checking.
   
   
     

Standard Granite Surface Plates

AA GRADE (LABORATORY)
Size in
 Inches
  
Overall
Accuracy
  
Thickness
 in Inches
  
Wt., Lb.
 
  
 
  
 
  
 
 8 x 12
  
.000050"
  
2
  
20
12 x 12
  
.000050"
  
3
  
45
12 x 18
  
.000050"
  
4
  
90
18 x 18
  
.000050"
  
4
  
135
18 x 24
  
.000075"
  
4
  
180
 
  
 
  
 
  
 
24 x 24
  
.000075"
  
4
  
240
24 x 36
  
.000075"
  
6
  
540
24 x 48
  
.000150"
  
8
  
960
36 x 36
  
.000150"
  
6
  
810
36 x 48
  
.000200"
  
8
  
1440
 
  
 
  
 
  
 
36 x 60
  
.000250"
  
8
  
1800
36 x 72
  
.000300"
  
10
  
2700
48 x 48
  
.000200"
  
8
  
1920
48 x 60
  
.000300"
  
8
  
2400
48 x 72
  
.000350"
  
10
  
3600
48 x 96
  
.000500"
  
12
  
5760
 
A GRADE (INSPECTION)
Size in  Inches
  
Overall Accuracy
  
Thickness in Inches
  
Wt., Lb.
 
  
 
  
 
  
 
 8 x 12
  
.000100"
  
2
  
20
12 x 12
  
.000100"
  
2
  
30
12 x 18
  
.000100"
  
3
  
75
18 x 18
  
.000100"
  
3
  
100
18 x 24
  
.000150"
  
3
  
150
 
  
 
  
 
  
 
24 x 24
  
.000150"
  
4
  
240
24 x 36
  
.000200"
  
4
  
360
24 x 48
  
.000300"
  
6
  
720
36 x 36
  
.000300"
  
6
  
810
36 x 48
  
.000400"
  
6
  
1080
 
  
 
  
 
  
 
36 x 60
  
.000500"
  
6
  
1350
36 x 72
  
.000600"
  
8
  
2160
48 x 48
  
.000400"
  
6
  
1440
48 x 60
  
.000600"
  
6
  
1800
48 x 72
  
.000700"
  
8
  
2880
48 x 96
  
.001000"
  
10
  
4800
 
B GRADE (TOOLROOM)
Size in  Inches
  
Overall Accuracy
  
Thickness in Inches
  
Wt., Lb.
 
  
 
  
 
  
 
 8 x 12
  
.000200"
  
2
  
20
12 x 12
  
.000200"
  
2
  
30
12 x 18
  
.000200"
  
3
  
70
18 x 18
  
.000200"
  
3
  
100
18 x 24
  
.000300"
  
3
  
150
 
  
 
  
 
  
 
24 x 24
  
.000300"
  
3
  
180
24 x 36
  
.000400"
  
4
  
360
24 x 48
  
.000600"
  
6
  
720
36 x 36
  
.000600"
  
4
  
540
36 x 48
  
.000800"
  
6
  
1080
 
  
 
  
 
  
 
36 x 60
  
.001000"
  
6
  
1350
36 x 72
  
.001200"
  
6
  
1620
48 x 48
  
.000800"
  
6
  
1440
48 x 60
  
.001200"
  
6
  
1800
48 x 72
  
.001400"
  
6
  
2160
48 x 96
  
.002000"
  
8
  
3840

Other sizes & thicknesses on request.

Call today for a quote 1-800-874-5441
or e-mail us at sales@PyramidGranite.com

Home

Contact Us

 Granite Accessories Worldwide Shipping
JIT-Kanban Delivery Surface Plates FAQ's
General Info & Granite Selection Drilling, Slotting & Inserting Family & History
Granite Machine Bases Logo Engraving & Private Labeling Facilities
Metal Weldments & Support Stands Calibration & Certification Quality Policy
Vibration Dampening Systems Design Assistance President's Comments


Your reliable & affordable precision granite manufacturer
of unsurpassed quality products is ...
 
PYRAMID GRANITE & METALS, INC.

660 Superior St. • Escondido, CA 92029 • Ph (760) 745-6309 • Fax (760) 743-2803
1-800 874-5441 Nationwide and Canada • sales@PyramidGranite.com

 © Pyramid Granite & Metals, Inc. 2004