Long Series Drill Bits
The image shows a long series drill compared to its diametric equivalents, all are 11⁄32 inches (8.7 mm) in diameter. The equivalent morse taper drill shown in the middle is of the usual length for a taper shank drill. The lower drill bit is the jobber or parallel shank equivalent.
Read more about this topic: Drill Bit Sizes
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“Swift blazing flag of the regiment,
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