An invisible ray produced by a quartz lamp will show up distinctly writing on a forged cheque which has been obliterated by chemicals. Postage stamps from which the postmarks have been obliterated can be tested by this lamp.
Permanent link to this item
https://paperspast.natlib.govt.nz/newspapers/SUNAK19290416.2.111
Bibliographic details
Sun (Auckland), Volume III, Issue 639, 16 April 1929, Page 11
Word Count
38Untitled Sun (Auckland), Volume III, Issue 639, 16 April 1929, Page 11
Using This Item
Stuff Ltd is the copyright owner for the Sun (Auckland). You can reproduce in-copyright material from this newspaper for non-commercial use under a Creative Commons BY-NC-SA 3.0 New Zealand licence. This newspaper is not available for commercial use without the consent of Stuff Ltd. For advice on reproduction of out-of-copyright material from this newspaper, please refer to the Copyright guide.
Log in