Range: 2-1/8 - 3-1/2"
52-471-004 Fowler Telescoping Gage: 2-1/8 - 3-1/2"
The Fowler 52-471-004 Telescoping Gage has the following specifications:
Another Fowler tool for easy and accurate measurements. Under spring tension, the plungers of the gage expand from the center to the size of the hole being measured and are then locked in place by a knurled knob. Final hole size is obtained by measuring over the contacts with a micrometer or vernier caliper.
Fowler Telescoping Gages and Sets