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Angle Gage Block Sets
Webber Angle Gage Blocks permit fast, simple and accurate measurements of any angle. They are far superior to sine bar measuring methods that involve trigonometric formulae and complex stacks of gage blocks.

Webber Angle Gage Blocks come in three accuracy grades: croblox® Reference Angle Blocks (R grade) with a 1 second accuracy, steel Calibration Grade Angle Blocks (C grade) with a 2 second accuracy, and steel Working Grade Angle Blocks (W grade) with a 5 second accuracy. Each grade can be purchased individually, or in sets that will measure in steps of 1 second, 1 minute or 1 degree to suit any need.

croblox® Reference Angle Blocks with a 1 second accuracy are designed for optical use or as reference standards for autocollimators, spectrometers, or other types of optical instruments. These Angle Blocks are unsurpassed for use in aerospace, optical and precision instrument fields.

Steel Calibration Angle Blocks with a 2 second accuracy possess the same high quality as the Reference Grade Angle Blocks but are manufactured from hardened tool steel for better economy.

Working Angle Blocks with a 5 second accuracy are designed for the shop or tool room. Their longer gaging surfaces are made for use with an indicator. Additonally, these blocks reduce set-up time and minimize error in grinding both simple and compound angles.

Whether aligning a complex optical system, or inspecting a simple angle, Starrett's Webber Gage Division has the Angle Block solution to fit your requirements and your budget!

Contact our sales professionals at sales@starrett-webber.com to discuss your requirements.

Catalog No. AG 18.W
Catalog
No.
Grade 
 Number
Blocks
in Set
Material
  Measuring Range
  Blocks included in Set (§)
  Base
Dimensions
of Blocks
AG 6.R
AG 6.C
AG 8.W
Ref
Cal
Work
6
6
8
croblox®
Steel
Steel
   0 to 99° in 1 degree steps
  6 Blocks (in degrees):  
         1°, 3°, 5°, 15°, 30°, and 45°
1" x 2"
1" x 2"
5/8" x 4"
AG 11.R
AG 11.C
AG 13.W
Ref
Cal
Work
11
11
13
croblox® 
Steel
Steel
   0 to 99° in 1 minute steps
  6 Blocks (in degrees): 
         1°, 3°, 5°, 15°, 30°, and 45°
  5 Blocks (in minutes):  
         1', 3', 5', 20', and 30'
1" x 2" 
1" x 2" 
5/8" x 4"
AG 16.R
AG 16.C
AG 18.W
Ref
Cal
Work
16
16
18
croblox®
Steel
Steel
   0 to 99° in 1 second steps
  6 Blocks (in degrees): 
         1°, 3°, 5°, 15°, 30°, and 45° 
  5 Blocks (in minutes): 
         1', 3', 5', 20', and 30'
  5 Blocks (in seconds): 
         1", 3", 5", 20", and 30"
1" x 2" 
1" x 2" 
5/8" x 4"
§:  Working Grade Sets (W) also include a 6-inch parallel and 6-inch Knife Edge.
Individual Angle Gage Block Sizes
Degrees
Minutes 
 Seconds
1.D
3.D
5.D
15.D
30.D
45.D
1.M
 3.M
 5.M
20.M
30.M
1.S
3.S
5.S
20.S
30.S

					
Catalog Numbers for Individual Angle Gage Blocks
PREFIX
SIZE
GRADE
CATALOG NUMBER
AG
1.D
C
AG 1.DC
+
+
=
Grade Designations:
    R = Reference Grade
    C = Calibration Grade
    W = Working Grade
Catalog Number for Parallels and Knife Edges
(Available only in Working Grade)
         Parallel------ Cat No.:      AG 6.PW
         Knife Edge--Cat No.:      AG 6.KEW
True Squares
.
Catalog
No.
Grade 
Material
  Base
Dimensions
of Blocks
TS 21.R
Reference
croblox®
1" x 2"
TS 21.C
Calibration
Steel
1" x 2" 
TS 44.W
Working
Steel
5/8" x 4"
TS 66.W
Working
Steel
5/8" x 6"
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