Starrett 178MA 178M Series radius gage measures concave and convex fillets from 1 to 3 mm in 0.25 mm increments. The 34-leaf set is made of stainless steel for corrosion resistance. Overall dimensions are 4-1/64 in L x 31/64 in W x 2-3/64 in H.

The Starrett 178 Series Fillet or Radius Inch Reading Gages are very useful for tool and diemakers, machinists, screw machine operators, patternmakers and other mechanics to lay out and check radii of tools, dies, patterns, and more. 34 Leaves, 1-7mm Range, 0.25mm/0.5mm increments.

Features

• Made of nicely finished, high quality steel
• 1-7 mm concave and convex reading
• Any one of the leaves can be securely locked in position by a locking device
• Each gage has leaves for measuring both concave and convex radii, with each leaf stamped with the radius size
• Millimeter system of measurement
• 1 - 3 mm, 3 - 7 mm measuring range
• 0.25 mm, 0.5 mm graduations