[Illustration: [Centre Screw Spring Bow Half Set]]
4 inch Spring Bow Half Set centre screw adjustment, with interchangeable
needle, pen, and pencil points Price 17/6
The Centre Screw Spring Bow Half Set of Compasses, as illustrated,
possesses the advantage of COMBINING IN ONE INSTRUMENT THE SET OF THREE
SEPARATE SPRING BOWS hitherto in use, while the centre screw makes for
ease and accuracy of manipulation, at the same time providing a radius
of over 2 inches, or double that of the old pattern.
This instrument is less expensive than the set of 3 bows, while
considerably stronger in construction.
The fixed needle point is shouldered.
This illustration is given as an indication of the various Drawing
Instruments manufactured by us.
Illustrated Booklet giving full particulars and prices of other
Instruments and Cases of Instruments sent on application.
Specially arranged Sets of Instruments made for Colleges, Schools,
Technical Institutes
Estimates submitted on Application.
_Write to our Head Office_:
CASTLE LANE, WESTMINSTER, LONDON, S.W. 1.
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