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The Harry Watts square drill bit is based on a Reuleaux triangle shape. It is used together with a guide and a particular chuck to make a square hole. [3] [4] Similarly, the company also manufactures drill bits for other angular holes such as pentagons and hexagons.
When mounted in a special chuck which allows for the bit not having a fixed centre of rotation, it can drill a hole that is nearly square. [33] Although patented by Henry Watts in 1914, similar drills invented by others were used earlier. [9] Other Reuleaux polygons are used to drill pentagonal, hexagonal, and octagonal holes. [9] [33]
West Seventh in St. Paul is also known as Fort Road, [16] owing to its location on historic Native American and fur trader paths along the northern bank of the Mississippi River from downtown Saint Paul to Fort Snelling. This area is colloquially known as the "West End", and is different from the area across the river known as the "West Side".
Minnesota was divided into a south-eastern area including the Twin-Cities with area code 612 and the rest of the state in the south-west, north, and north-east with area code 218. [2] In 1954, the southern half of 612 was designated a separate numbering plan area with area code 507 as the third area code for the state.
The Lowertown Historic District is a historic district in the Lowertown neighborhood of Saint Paul, Minnesota, United States.This 16-block warehouse and wholesaling district comprises 37 contributing properties built 1870s–1920.
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