Vintage J Chesterman No 327D Precision 12\" Steel Rule Ruler Rare 1/96 1/100 UK For Sale

Vintage J Chesterman No. 327D Precision 12\" Steel RuleMade in Sheffield, England (Pre-1963 Bow Works Era)
Up for sale is a highly collectible and uncommonly specialized 12-inch precision engineering steel rule manufactured by the prestigious James Chesterman & Co. in Sheffield. Unlike common everyday rules that only carry standard fractional increments, the No. 327D model is an advanced high-precision engineering tool. It boasts an incredibly dense array of complex mathematical and decimal layouts, making it highly useful for patternmakers, high-end draftsmen, instrument makers, and vintage tool collectors alike.
Technical Specifications & Graduations:Manufacturer: J Chesterman (Sheffield, England)Model: No. 327DLength: 12 Inches (Imperial)Ultra-Fine Graduations Include:- Standard & Advanced Fractions: 1/8\", 1/16\", 1/32\", 1/64\", 1/96\"- Drafting / Mathematical Fractions: 1/12\", 1/24\", 1/48\"- Decimal Fractions: 1/10\", 1/20\", 1/50\", 1/100\"
Condition Report:This rule has been carefully preserved from an old workshop environment. It has been lightly cleaned to remove all surface rust and debris, purposely maintaining its original, rich dark steel patina. It displays honest signs of history and light wear, but all numbers and ultra-fine machine-divided lines are fully visible and readable. No major dents, bends, or structural issues.
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