ONE OF THE "SNAP-SHOTS OF MY CONTEMPORARIES"
BY LYMAN ABBOTT

Jaw Gauge

DUANE H. CHURCH

OF WALTHAM

The world's most famous inventor of watch machinery

ACCURACY

The Bearing of a Shaft that Measures Only Six One-Thousandths of a Centimeter, the Diameter of a Normal Human Hair

WE
VE told you in our last adver-
tisement that the twelfth part
of a human hair was the difference
between the Waltham standardized
accuracy and the variable guess-
work in foreign watches.

A normal human hair measures six
one-thousandths of a centimeter.
Imagine, then, the pivots or bear-
ings of the Balance Shaft being only
the size of a human hair.

If you should split one of the hairs
of your head into six equal parts,
each part would measure approxi-
mately one-thousandth of a centi-
meter. Yet, even this minute varia-
tion is eliminated by the Waltham
standard of measurement.

For instance, here is a Waltham

Watch, the works of which are designed to perform on a pivot measurement of six one-thousandths of a centimeter.

But suppose this pivot was enlarged the third part of a human hair, friction would be increased, causing a variation in the time-keeping qualities of the watch.

The Waltham Watch Company has
created marvelous gauges that meas-
ure even the twelfth part of a human
hair to determine these variations
and eliminate errors unseen by the
human eye in the works of a watch,
which mean all the difference to you
in dependability and value, giving
another of those unanswerable rea-
sons why your watch selection
should be a Waltham.

This story is continued in a beautiful booklet in which you will find
a liberal watch education. Šent free upon request to the
Waltham Watch Company, Waltham, Mass.

Makers of the famous Waltham air friction quality Speedometers and Automobile Time-pieces used on the world's leading cars

WALTHAM

THE WORLD'S WATCH OVER TIME
Where you see this sign they sell Waltham Watches

Photograph by John Kabel

LANDING AN EASTERN BROOK TROUT FROM TWO MEDICINE LAKE, GLACIER NATIONAL PARK

ON THE ART OF TAKING A VACATION, BY STEPHEN LEACOCK

WEDNESDAY, MAY 25, 1921

PRICE: FIFTEEN CENTS A COPY

FIVE DOLLARS A YEAR

381 FOURTH AVENUE, NEW YORK

OTHER VACATION ARTICLES BY

JOHN BURROUGHS, WILL H. DILG, ELON JESSUP

AND ANNA WORTHINGTON COALE

The Watch of Railroad Accuracy"

When you miss a train or an important appointment, you know how your schedule for one whole day simply goes all to smash.

Keep to your schedules by a watch whose accuracy is proved by the thousands of railroad men who prefer it. Hamilton Watches are the timekeepers most popular with American railroad men.

For example: Conductor Dan Mandaville, shown above, has been in Erie

service 45 years. His run is between Jersey City and Binghamton-out on No. 5, back on No. 6. He has been carrying for 14 years that Hamilton he holds in his hand.

A Hamilton used as a gift, prize, or reward is received with greater delight because of its high reputation.

There's every desirable kind. Prices range from $40 to $200. Movements alone, $22 (in Canada $25) and up.

Send for "The Timekeeper"-an interesting booklet about the manufacture and care of fine watches. The different Hamiltons are illustrated, and prices given.

HAMILTON WATCH CO., Lancaster, Pennsylvania

P OUTLOOK. May 25, 1921. Volume 128, Number 4. Published weekly by the Outlook Company at 381 Fourth Avenue, New York, N. Y. Subscription price $5.00 a year. Entered as second-class matter, July 21, 1893, at the Post Office at New York, under the Act of March 3, 1879