National Grinding Wheel, speed calculator (c1920).jpg

National Grinding Wheel, speed calculator (c1920).jpg
National Grinding Wheel, speed calculator, reverse (c1920).jpg

Dublin Core

Title

National Grinding Wheel, speed calculator (c1920).jpg

Date

1920

Citation

“National Grinding Wheel, speed calculator (c1920).jpg,” North Tonawanda History, accessed March 28, 2024, https://nthistory.com/items/show/2485.