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THE

SHEET-METAL WORKER'S INSTRUCTOR

COMPRISING

A SELECTION OF GEOMETRICAL PROBLEMS

AND

PRACTICAL RULES FOR DESCRIBING THE VARIOUS PATTERNS REQUIRED BY ZINC, SHEET-IRON, COPPER, AND TIN-PLATE WORKERS

BT

REUBEN HENRY WARN

practical tin-plate worker

SIXTH EDITION

BY

JOSEPH G. HORNER, A.-M.I.M.E.

ACIHOB OF " FATfERN MAK1KG," " PIATISG AKD BOILER MAKING," KTC., ETC.

ratify 465 Cllitgtrations

LONDON

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