• Calibrated to Fowler specifications which meet or exceed ASME B89
Fowler Illuminated Magnifiers are of the highest optical quality and offer fine resolution
• All models offer a depth rod which can be read directly from verniers
silent motion ideally suited to contact scanning and with a first-term accuracy specification of under two microns
Fowler 12 Piece Angle Block Set 52575020 • Calibrated to Fowler specificationsSpecial Features: Precision ground hardened steel. Blocks: 1 4, 1 2, 1, 2, 3, 4, 5, 10, 15, 20, 25 and 30 Angular accuracy : 30 arc seconds Set up angles quickly and easily. All blocks 3" long x . 25" thick. Complete in "Shop Hardened" case.