0120 



Measurements of Lengths 



0120 



Micrometric measurements. Ewell, M. D. 



Mcr. S. J. (1889) 447. 

 . Rogers, W. A. Am. Mcr. S. P. 15 



(1893) 31-. 



, comparative. Hamilton, J. A. [1805] 

 Ir. Ac. T. 10 (1806) 109-. 



, errors due to imperfect focussing. 

 Bosscha, J. Delft EC. Pol. A. 2 (1886) 89-. 



, probable error. Morley, E. W. (xn) 



Am. Mcr. J. 1 (1878-79) 93-. 



Microscopic objects, methods of measuring. 

 Castracane degli Antelminelli, F. Km. At. 

 N. Line. 22 (1869) 73-. 



Moisture, influence on length of wood. Hilde- 

 brand, R. A. Ps. C. 34 (1888) 361-. 



Paper scales, variability. Wiebe, H. F. Z. 

 Instk. 5 (1885) 304-. 



Planimeter, measurement of lengths by. Hen- 

 sen, V. [1893] Schl.-Holst. Nt. Vr. Schr. 10 



(1895) 108-. 



Eadiation of heat between metals, effect. 

 Rogers, W. A. Am. S. Mcr. P. 10 (1888) 

 33-. 



Scale, determination of division errors. Han- 

 sen, P. A. Leip. Mth. Ps. Ab. 10 (1874) 

 525-. 



, . Jacoby, H. Am. J. Sc. 1 



(1896) 333-. 



divider. (Lengths and angles.) Cole, A. 

 D. Denison Un. Sc. Lb. Bll. 5 (1890) 20. 



in 1000 divisions. Knar, J. Baumgartner 

 Z. 7 (1830) 58-. 



Scales, inch- and metre-, arrangement for 

 dividing. Bosanquet, R. H. M. Ph. Mg. 15 

 (1883) 217-. 



, metallic, comparison when their tempera- 

 ture varies. Prony, R. de. Bb. Brit. 19 

 (1802) 316-. 



and rules, subdivisions, standardising. 

 Broch, 0. J. Par. Poids et Mes. Tr. Mm. 5 

 (1886) 82 pp. 



Screw gauge. Hornblower, J. C, Nicholson 



J. 6 (1803) 247-. 

 . Brit. Ass. Comm. B. A. Ep. (1882) 



311-; (1884)287-; (1896) 527-; (1899)464-; 



(1900) 436-. 



. (Enlarged shadow photographs of 

 screws.) Watkin, (Col.) . B. A. Ep. 

 (1896) 532-. 



. (Gauges for workshop use.) Stroh, A. 



B. A. Ep. (1896) 534-. 



. (Working dimensions in millimetres 

 and thousandths of an inch.) Foster, A. Le 

 Neve. B. A. Ep. (1896) 536-. 



. (Tests of B. A. screws by Henre" 

 diameters.) Price, W. A. B. A. Ep. (1896) 

 537. 



. (Screws by Pratt and Whitney Com- 

 pany.) Watkin, (Col.) W. B. A. Ep. (1899) 

 466. 



. ( .) Chaney, H. J. 



B. A. Ep. (1899) 468-. 



. (Screw threads.) Gorham, J. M., <# 



Price, W.A. B. A. Ep. (1900) 444-. 



gauges, uniform. Richard, G. A. Tel. 20 

 (1893) 473-. 



, inch leading, cutting millimetre thread 

 with. Boys, C. V. Nt. 43 (1891) 439-. 



Screw pitches, measurement. Pregel, . 



Dingier 272 (1889) 171-. 

 -- , practical solution of problem. Rogers, 



W. A. V. Nost. Eng. Mg. 31 (1884) 



343-. 

 -- , standard, in fine mechanics. Loewenherz, 



. Z. Instk. 10 (1890) 301-. 

 -- , universal system. Iterson, J. A. R. van. 



's Gravenh. I. Ing. Ts. (1896-97) (Vh.) 2. 



, -- . Franco, I. 's Gravenh. I. In. 

 Ts. (1896-97) (Vh.) 3-. 



-- , -- . Stork, C. F. 's Gravenh. I. Ing. 



Ts. (1896-97) (Vh.) 9. 

 Small differences in length, etc., determination. 



Stamkart, F. J. Amst. Ts. Ws. Nt. Wet. 4 



(1851) 21-. 



elongations, acoustic method. Cardani, P. 

 Em. E. Ac. Line. Ed. 5 (1889) (Sem. 1) 

 892-. 



, electrical methods. Ercolini, G. N. 

 Cim. 10 (1899) 241-. 



lengths. Waldo, L. Am. Ac. P. 13 (1878) 

 352-. 



-- , optical method. Govi, G. Tor. At. Ac. 

 Sc. 8 (1872-73) 83-. 



thicknesses. Meslin, G. Mntp. Ac. Mm. 2 

 (1900) 429-. 



-- , by electric current. Giordano, G. [1863] 

 (vn) Nap. At. I. Inc. 12 (1864) 15-. 



Spherometer, absolute measurements of length 

 by. Mace de Lepinay, J. J. de Ps. 7 (1888) 

 53-. 



, accurate measurement of thickness by. 

 Koch, K. R. A. Ps. C. 3 (1878) 611-. 



Standard bar of Federal Bureau, expansion. 

 Wild, H. Arch. Sc. Ps. Nt. 41 (1871) 373-. 



, 10-feet iron, of Indian survey, co- 

 efficient of expansion. Prinsep, J. Beng. J. 

 As. S. 2 (1833) 130-. 



, invariability in transit. Ricci, (le 

 gen.) . A. Cons. Arts et Met. 10 (*1873) 

 92-. 



-- , 6-metre, and rate of expansion by heat. 



Hilgard, J. E. (vi Adds.) U.S. Coast Sv. 



Ep. (1862) 248-. 

 -- , platinum-iridium, of International Geo- 



desic Association. Matthey, G. C. E. 83 



(1876) 1090-. 

 -- , -- , ---- (Matthey). Sainte- 



Claire Deville, H. C. E. 83 (1876) 1091-. 

 -- , -- , ---- ( ) Tresca, H. E. 



C. E. 83 (1876) 1093-. 

 -- , -- , ---- . Mascart, E. E. N., 



<& Sainte- Claire Deville, H. Par. EC. Norm. 



A. 8 (1879) 9- ; 9 (1880) 9- ; C. E. 88 (1879) 



210- ; 89 (1879) 558-. 



bars, comparison in liquids. Krusper, I. 

 [1873] (xn) Mag. Tud. Ak. Etk. (Mth.) 2 

 (1875) (No. 3) 9 pp. 



-- , diffusion of heat in. Woodward, R. S. 



A. Mth. 4 (1888) 101-. 

 -- , metals suitable for. Guillaume, C. E. 



Par. S. Ps. Se\ (1893) 253-. 

 -- , metre, comparison. Pernet, J. Berl. 



Ps. Gs. Vh. (1886) 32-. 

 Standards, precautions in comparing. Rogers, 



W. A. Am. S. Mcr. P. (1886) 67-. 



31 



