- Email: [email protected]
American waltham watch company
Sept., t9o2. ]
Metric System of PVeights and Measures.
i77
And to the meritorious feature, thus demonstrated, of the adaptation rather of our present fundamental unit of measurement--the i n c h - - t o the inter-conversion or metric system, in preference to its abolition, I may show a further addition by mentioning that by substituting, instead of /7, and expressed in the same units of 2'5 square inches, the value B/d, or properly the value B/(d. 2'5); B being the weight in American (new) pounds of the water displaced by the ship in its i m m e r s i o n - - a n d d being the lenght of the ship in the direction of its motion on the water-line-the mathematically provable resistance to ship's motion and the power required for strch motion may be calculated precisely. The proof of such equation rests on the consideration of the serial positions of ship in repeated lengths of its own (as if in ice), and of the fact that quantities not so indicated as displaced, reoccupy (in quantity, though not in identity) former position, as well as on the actual demonstration that not friction but volume and its form are the conditions for resistance by the medium, subject to the coefficient of density of the medium, which for water is as i. (Compare this Journal, 1893, Nos. 3-5.) F. M. F. CAZIN. HOBOKEN, N. J., March 12, I9O2.
AMERICAN WALTHAM WATCH COMPANY.
To the Secretary :
WALTHAM,MASS., February 5, 19°2.
We are in receipt of your communication of ISt inst., together with the report of your committee, who have had under consideration the merits of the metric system of measures. * * * W e desire to say that we agree with the conclusions of your committee in every one of the questions specified. W e may say that for more than thirty years we have employed the metric system of linear measur6ment as being greatly superior in convenience for the minute measurements required in ttlq manufacture of watches. In adopting this system we took a centimeter as our unit of measurement. This we subdivide into a thousand parts, and have special gauges reading to thousandths. In many instances we subdivide by the eye the graduations on our gauges. Having this system in use for measurement of watch parts, we also use it in our machine department in the manufacture of machines, and while it is somewhat novel to men when they first come to us, yet they very readily acquire the system, which is extremely simple in computation. We trust that the deliberation of your society will in some measure hasten the adoption of this system as a Government standard of measurements. Yours truly, AMERICAN WALTHAM WATCH COMPANY. E. A. MARSH, Gen'l Supt. VOL. CLIV. No. 92I. 12
Metric System of PVeights and Measures.
i77
And to the meritorious feature, thus demonstrated, of the adaptation rather of our present fundamental unit of measurement--the i n c h - - t o the inter-conversion or metric system, in preference to its abolition, I may show a further addition by mentioning that by substituting, instead of /7, and expressed in the same units of 2'5 square inches, the value B/d, or properly the value B/(d. 2'5); B being the weight in American (new) pounds of the water displaced by the ship in its i m m e r s i o n - - a n d d being the lenght of the ship in the direction of its motion on the water-line-the mathematically provable resistance to ship's motion and the power required for strch motion may be calculated precisely. The proof of such equation rests on the consideration of the serial positions of ship in repeated lengths of its own (as if in ice), and of the fact that quantities not so indicated as displaced, reoccupy (in quantity, though not in identity) former position, as well as on the actual demonstration that not friction but volume and its form are the conditions for resistance by the medium, subject to the coefficient of density of the medium, which for water is as i. (Compare this Journal, 1893, Nos. 3-5.) F. M. F. CAZIN. HOBOKEN, N. J., March 12, I9O2.
AMERICAN WALTHAM WATCH COMPANY.
To the Secretary :
WALTHAM,MASS., February 5, 19°2.
We are in receipt of your communication of ISt inst., together with the report of your committee, who have had under consideration the merits of the metric system of measures. * * * W e desire to say that we agree with the conclusions of your committee in every one of the questions specified. W e may say that for more than thirty years we have employed the metric system of linear measur6ment as being greatly superior in convenience for the minute measurements required in ttlq manufacture of watches. In adopting this system we took a centimeter as our unit of measurement. This we subdivide into a thousand parts, and have special gauges reading to thousandths. In many instances we subdivide by the eye the graduations on our gauges. Having this system in use for measurement of watch parts, we also use it in our machine department in the manufacture of machines, and while it is somewhat novel to men when they first come to us, yet they very readily acquire the system, which is extremely simple in computation. We trust that the deliberation of your society will in some measure hasten the adoption of this system as a Government standard of measurements. Yours truly, AMERICAN WALTHAM WATCH COMPANY. E. A. MARSH, Gen'l Supt. VOL. CLIV. No. 92I. 12