You are bidding on a collection of 9 carpenters set squares and mitre squares All being sold in the one auction. Pickup from Richmond Rd in Grey Lynn Can ship anywhere in NZ at buyers cost

They would look amazing restored and on display

Google AI says the following about the images

Mitre The selected item is an antique 45-degree miter square (also spelled mitre square), a specialized layout tool used by traditional carpenters and cabinetmakers to mark and check 45-degree angles. Based on the distinct decorative brass inlay shape, the heavy brass facing edges, and the premium dark hardwood stock (likely ebony or dark rosewood), this tool matches the premium 19th to early 20th-century craftsmanship of classic English toolmakers, specifically I. Sorby of Sheffield.Key

Visual Features & ConstructionDecorative Brass Shield / Inlay: The elaborate crown or decorative shield-shaped brass inlay houses the internal steel rivets. This signature layout serves both to reinforce the joint between the stock and blade and to showcase high-end craftsmanship. Brass Facing: Thick brass strips line the inner and outer working surfaces of the stock. This protects the wood from wearing down over time, ensuring the tool remains highly accurate over decades of use. Premium Hardwood Stock: The dark, dense wood used for the handle provides structural stability and resists changes from moisture. Blued or Patinated Steel Blade: The wide steel blade meets the wood stock at a precise 45-degree angle for setting up mitered joints.

Square Age and Origin Based on the ornate quatrefoil brass inlay, heavy riveted construction, and the dark wood patina, this square likely dates from the late 19th century to early 20th century (approx. 1880–1920). During this era, premium tool manufacturers from Sheffield, England (such as William Marples & Sons) and early American makers produced elegant, high-durability layout tools with these exact decorative diamond and quatrefoil configurations