Gage Block Sets Angle Gage Block Sets 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. Angle gage blocks come in three accuracies: croblox® Reference Angle Blocks with a 1-second accuracy, steel Calibration Grade Angle Blocks with 2-second accuracy, and steel Working Grade Angle Blocks with 5-second accuracy. Each grade can be purchased in sets that will measure in steps of one-second, one-minute or one-degree to suit any need. (See angle block specification information on next two pages.) • Reference Angle Blocks croblox: 1-second accuracy. Designed for optical or as reference standards for autocollimators, spectrometers, etc. They are unsurpassed for use in aerospace, optical, and precision instrument fields. • Calibration Angle Blocks Steel: 2-second accuracy. The same high quality as the Reference Grade Angle Blocks. • Working Angle Blocks Steel: 5-second accuracy. These angles are designed for shop or tool room.The longer gaging surfaces are made for use with an indicator. These blocks reduce set-up time and minimize error in grinding both simple and compound angles. AG 16.R NOTE: The catalog numbers and specifications of our angle gage blocks have been changed in response to updated requirements concerning the application of the uncertainty of measurement. See the next two pages for information regarding the specifications of our angle blocks. AG 18.W Angle Gage Block Sets in Case Cat. No. Description/Accuracy Grade Blocks Per Set Measuring Range Blocks Included In Sets AG 6.R Reference Grade ±1.0 Second Calibration Grade ±2.0 Seconds 6 0-99º in 1° Steps 6 Blocks: 1°, 3°, 5°, 15°, 30°, 45° AG 6.C AG 11.R Reference Grade ±1.0 Second Calibration Grade ±2.0 Seconds 11 0-99º in 1' Steps 6 Blocks: 1°, 3°, 5°, 15°, 30°, 45° 5 Blocks: 1', 3', 5', 20', 30' AG 11.C AG 16.R Reference Grade ±1.0 Second Calibration Grade ±2.0 Seconds 16 0-99º in 1" Steps 6 Blocks: 1°, 3°, 5°, 15°, 30°, 45° 5 Blocks: 1', 3', 5', 20', 30' 5 Blocks: 1", 3", 5", 20", 30" AG 16.C Cases for Angle Gage Block Sets Cat. No. Description CS 9135 Calibration Set and Reference Case * One 6" (150mm) parallel and one 6" (150mm) knife edge are included with Working Grade Sets in addition to the listed sizes. To Order Individually, Specify in the Following Key Sequence: Angle Gage Prefix Numeric Size of Angle Angle Units (Degree, Min., Sec.) Accuracy Grade R or C AG 45 D R Example: AG 45.DR = a Reference 45º Angle Block AG 30. MC = Calibration Grade 30' Angle Block 399 S t arrett -W ebber G age B locks