Farrow's military encyclopedia : a dictionary of military knowledge . lardsof length, diameter, etc., in suitable forms and meas-uringiby difference from them, tlie <ibjeet underexaiiiinatidu as jiroposed by Mr. llichards. Thesest:ui(lar(ls differ liy convenient fractions of an inchfrom one another, and by using the nearest one tothe object whose; dimensions are required, only avery short screw is necessary. The drawing sliowsthe form of a Measuring Maeliine much used in ar-senals. Tlu-se machines are niad< <if various si/. adjusted for absolute measurement of dimeu- MEASURING-S
Farrow's military encyclopedia : a dictionary of military knowledge . lardsof length, diameter, etc., in suitable forms and meas-uringiby difference from them, tlie <ibjeet underexaiiiinatidu as jiroposed by Mr. llichards. Thesest:ui(lar(ls differ liy convenient fractions of an inchfrom one another, and by using the nearest one tothe object whose; dimensions are required, only avery short screw is necessary. The drawing sliowsthe form of a Measuring Maeliine much used in ar-senals. Tlu-se machines are niad< <if various si/. adjusted for absolute measurement of dimeu- MEASURING-STAFF. 29;- HECHANICAL MANEUV££S. sions within their rangf, and htp rorrort within a limit (if (IMC tcn-th()HSiiM(lth of iin iriili. Tliis theusual limit of iiceunicy flr cyliiKlriciil j^uagcH, andsufficiently precise for all practical i)iirp(jse8. Tliese biscuits were first introduced into Britain from Amcr-irii l)y Mr. tlie yeurlH/jl. Tlicy havi-beenspoken highly of by medical men as food, and arcstill made to a limited extent; but one purpose they. miuliincs will imlicate, by means of vernier attach-ment, variation.^ to one twenty-tivc-tlioiisandtli of iinincli, or even less ; but mrmciring and iiidiiyiting arevery (lilTcrcMt tliimjs. although generally hiiitf/i. MEASURING STAFF.—An instrument employed intlie inspccliim (if cannon. It consists of a stuff ofsteel or inm, in jointsof suitable lengths, connectedtogether by screws. Each joint is provided with alight brassdisk. D, the diameter of which is . in-ches less than that of the bore. Through tlie center ofthe disk there is a liole which tits upon the shoulder atthe joint; the whole is so arranged that wlien thejoints are screwed together the disks between themare held firmly in place, while the length of the staffis not affecte(l by them. A steel point is screwed onto the end. When pushed to the bottom of the bore,the staff coincides very nearly with its axis. The
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Keywords: ., bookcentury1800, bookdecade188, booksubjectmilitaryartandscience
