The Mechanical Training Centre (MTC) is a vocational training centre run jointly by His Majesty's Government of Nepal and the Government of Switzerland through the Directorate for Technical and Vocational Education (Nepal) and Helvetas Nepal.

SKAT, Swiss Center, for Appropriate Technology, is a documentation centre and consultancy group which is engaged in promoting Appropriate Technology in the Third World. Its mail-order bookshop with more than 1200 publications in stock and its publishing help to fulfill this aim.

First Edition

1976

Second Edition

1979, expanded content

Third Edition

1982, slightly revised

Fourth edition

1988, revised and expanded, co-published
by MTC and SKAT

Authors

Andreas Bachmann & Heinz Waldvogel

Editor

MTC (Mechanical Training Centre, Balaju,

Kathmandu/Nepal)

Publishers

MTC, Balaju, Kathmandu/Nepal
SKAT, St. Gallen/Switzerland

Copyright

Material of this publication may be freely quoted, translated or otherwise used. Acknowledgement is requested.

Comments

Questions and comments are welcome at MTC

Distributors

in Nepal:
Mechanical Training Centre
P.O. Box 4897
Kathmandu/Nepal

outside Nepal:
SKAT, Varnbuelstrasse 14
CH- 9000 St. Gallen/Switzerland
and
KODIS, Wartstrasse 6
CH- 8400 Winterthur/Switzerland

ISBN

3 908001 12 9