New Britain herald., 1922-01-04
MEASURING ONE
 MILLI0NTH INCH
Inventor Tells Of GauginS by Light WaVeS,- ,-0theT Methods

If an ordinary hair, which meas ures two -hundrcdths of an inch, were split longthwise into g.OU0 pieces each one of these pieces would meas ure ono one -millionth of an inch in diameter. Each one of these one millionth sections could be measured accurately by the Iloko precision gauge, according to the Inventor, Major w. F.. liokc. Of Baltimore. Major Hoke addressed between 15O and 200 members of the New Britain branch of the American Society of Mechanical Engineers at the New Britain Machine company's plant last night Among those present was Mayor O. F. Curtis.
 Would Make "Eine" Reading
 'li a person were to take two books each containing l 1000 pages" said the inventor, place one on top of the other and then press them together until the books were reduced to tho thickness of a hair, then each page would measure the milionth part of an inch, and could be measured by the Hoke precision gauge"
 Kept Method Secret
 For years one man was said to be the only man in the world who could make and measure things within the millionth of an inch, Measurements as accurate as this arc. of supreme i'm portance in delicate mechanical con trivances, such as are used by the l'. S. government in it's bureau of weight and standards.
 Hokc Shares With World
 This man kept his method of meas uring a secret. Major Hokc felt thai it was unfair to the mechanical and mathematical world to keep this in formation from science and, while in his position as a newspaper sketch artist, he gradually evolved the Hoke precision gauge, which took 3 years to develop. Now, that it is perfect ed," said the inventor, q am giving my method and plans to the world. because 1 think the world is entitled to the information. It is not reason able to permit one man to control all this knowledge"
 Se!!oWs In Charge
 The meeting was in charge of R. w. SelloWs, of the ITatnir Bearing Co. Mir. Selows is secretary of the local branch. In opening his address, Major Hoke stated that the gauge of high precision is going to be of more importance in future industrial de- Nelopment than ever before in the history of the world
 Might Spoil The Job
 That a gauge of so fine a measure ment is necessary as to be able to measure the millionth part of an inch is due, according to the inventor, to the fact that the ordinary gauge loses some in the measurement and loss as much as thousandth part of an inch would mean a serious error by the time the combined losses of parts of an intricate machine were figured into the finished article.
 Fly Bends Five Inch Bar
 bMajor Hoke excited considerable interest when he told his hearers, in speaking of minute measurements that, not only was the pressure of a finger or the weight of a penny sui ficient to bend a five inch steel bar an infnitsimal fraction of an inch, but a fly lighting on the bar, if said bar were unsupported in the center, would cause the bar to bend. The bending would be so imperceptiblc that nothing but a knife edged straight edge and a gauge measuring down to the milionth part of an inch, could prove it..
 TruinG Triangles
 A simple method of making a pre- cision or precisely correct triangle of steel which, according to the inventor has been overlooked up to the present time in modern machine shops, is to grind two triangles together When you have two triangles which are ex- actly alike on all sides, you have per feet triangles," he said.
 Grinding Gears Accurately
 He Illustrated the theory of grind ing gears by imagining two six point ed stars One star is held stationery while the other one is turned 1S0 de erees, or half way round, after the