54-336-306 Fowler Holemike 20" ExtensionThe Fowler Bowers Holemike 20" Extension is designed for use with Fowler Bowers bore gages, giving you precise accuracies over a extended range. This extension is ideal for measuring deeply recessed features, giving you reliable and repeatable measurements. Features: 20" 500mm in Length This extension fits the following Fowler Bowers Holemikes 2. 000" 8. 000" Gage Head
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