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Lot 79:
Description
This auction lot comprises two vintage technical drawing sets. The principal set is a professional mathematical instrument collection by the London maker W.H. Harling Ltd. The interior of the lid features a gold-stamped maker’s mark which reads: W. H. HARLING LTD / MATHEMATICAL INSTRUMENT / MANUFACTURERS / 117, MOORGATE / LONDON E.C.2. / MANUFACTURED IN ENGLAND. The set contains an assortment of instruments crafted from nickel silver and steel, including large compasses and dividers with interchangeable pencil, pen, and needle-point attachments, extension bars, several bow compasses with thumb-screw adjustments, and ruling pens. These are housed in a fitted mahogany case featuring a brass lock escutcheon, a dark blue velvet-lined base, and a moiré silk-lined lid.
The secondary set is a technical pen and lettering nib set contained in a slim, blue velvet-lined hinged case. This set includes one black technical pen holder with a metal pocket clip and thirteen assorted metal nibs intended for specialised lettering or stencil work.
Main wooden case width: approximately 20.3 cm to 22.9 cm.
Condition report:
The instruments appear in good used condition with surface patination and signs of age consistent with professional use. The mahogany case shows minor external wear and scuffing, while the interior velvet and silk linings remain well-preserved. The technical pen and nibs show signs of use and residual ink staining. Both cases are functional with some external wear.
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