The Starrett 829 Small Hole Gage Set includes full-ball gages that are used for general work. SET of 4:One each of 829A/B/C/D, in Case.

•Ideal for accurately measuring small holes, slots, grooves, and recesses
•Precision Ground Radius on each gage provides two-point contact for maximuaccuracy
•Used for general work
•Well balanced
•More accurate measurements
•Case
•Hardened-ball measuring surface with two-point contact
•Full-ball gages
•Smooth, sensitive adjustment
•Adjustment of the gage beyond their range is restricted by a safety stop that prevents breakage

Brand:Starrett
Type:Tool Set
Diameter Range:3.2 to 12.7 mm
Length:75 to 90 mm
Special Features:Ideal for Accurately Measuring Small Holes, Slots, Grooves, and Recesses;Precision Ground Radius on Each Gage Provides Two-Point Contact for Maximum Accuracy;Used for General Work;Well Balanced;More Accurate Measurements;Hardened-Ball Measuring Surface with Two-Point Contact;Full-Ball Gages;Smooth, Sensitive Adjustment;Adjustment of The Gage Beyond their Range is Restricted by A Safety Stop that Prevents Breakage
Number of Pieces:4