For sale is a vintage John Deere Truss Frame Plows Hitch Calculator, a rare dealer giveaway promotional tool used to assist farmers in determining proper hitch settings for John Deere plows. This slide-rule style calculator is a unique piece of John Deere history and a great collectible for agricultural enthusiasts.

Add to Favorite Sellers. Quick-connect mounting hardware allows easy hookup and fast removal Universal, heavy-duty push tube withstands the roughest use Blade swivel constructed of 3/8in. Blade attaching points for greater blade support and strength Open swivel eliminates dirt and snow buildup in the pivot point Five blade swivel positions and four-way blade pitch adjustment

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