LEATHERGAUGE • AUDITED FIELD MATRIX

Vegetable-Tanned Leather Weight & Tannery Matrix

Ounce-to-millimeter conversions, temper densities, stitching SPI pitches, and edge burnishing chemistry.

👜American Pit-Tanned Vegetable Leather

Wickett & Craig Traditional Harness Leather (5-6 oz)

thickness mm:2.0 - 2.4 mm (5-6 oz)
temper:Firm & Dense with Hot Wax Stuffed Core
stitching spi:6 to 7 Stitches Per Inch (SPI)
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💳Italian Full-Grain Calfskin Vachetta

Conceria Walpier Buttero Veg-Tan Leather (3-4 oz)

thickness mm:1.2 - 1.6 mm (3-4 oz)
temper:Medium-Firm with Crisp Clicker Cutting
stitching spi:8 to 9 Stitches Per Inch (Fine Luxury)
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⚔️Hand Stitching Hole Marker

French Style Diamond Pricking Irons (3.85 mm)

thickness mm:3.85 mm Spacing (Approx 6.6 SPI)
temper:Hand-Forged French Tool Steel
stitching spi:Slanted 45-Degree Diamond Slits
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