Railroad Supply Company. Weston Model 280 Portable Instruments FOR DIRECT CURRENT Accuracy , 1 % of Full Scale Value VOLTMETERS - AMMETERS - VOLT - AMMETERS Size , 4.4x4.6x1.5 Inches Shielded from the Effects of External Fields These ...

... Price Model 280 Weston Miniature Precision Portable Instruments For Direct ... Scale Divisions Each No. of Price Range 50 60 50 $ 18.75 120 60 18.75 130 75 ... 1 50 28.50 5 50 28.50 10 50 28.50 6 60 28.50 6 12 60 28.50 6 30 60 28.50 7.5 ...

... worth $ 800 ; there were six grind mills , four in use , which were worth ... 50 ; six iron shells worth $ 180 ; two grindstones with frames worth $ 15 ; an iron stool worth $ 2 ; seven vises worth $ 70 ... 1 1-3 - inch at 32 cents less 54.

... Scale , without Contact Key No. of Scale Value of Each Scale Division in Volts 1 Readable to in Volts Price Each 10 ... 50 100 12 1/20 65.00 021220 100 100 1/10 70.00 021221 150 150 1/10 75.00 021222 200 100 021223 250 125 021224 300 150 ...

... 1. - Scale - value determinations of vertical field balance in both azimuths at Caribou 90 . 80 . 70 . 60 . 50 . 40 . Large standard Distance , centimeters North in North in east west Distance , centimeters Mean ... Result . Mean ...

Lee Clyde Ilsley, Howard Bassett Freeman, Donald Henry Zellers. SCALE - VALUE ... 1. — Scale - value determinations of vertical field balance in both azimuths at Caribou 90 . 80 . 70 60 50 ... 50 321.8 317.4 40 320. 2 317.4 30 . 318.3 316.5 ...

... 1:50 and 1:1000 can be produced from control networks. The second of these ... Scale. All engineering plans and drawings are produced at particular scales, for example 1:500, 1:200, 1:100 and so on, in ratios of 5, 2 and 1. The scale's value ...

... value of M depends on L. Thus , the length of the tracing arm is set to such a length that one revolution of the wheel corresponds to a whole number and convenient value of area . When the figure is drawn to a natural scale ... 1 : 1 33.44 ...

Price, $39.50 including tax. Eveready case ... 1/50 speed; waist-level finder; fixed focus. Price, including tax, $3.95. ANSCO TITAN . - - |Roll film size 120; 12 exposures 2/4x2/4; 90-mm coated anastigmat f/4.5 lens with depth of field scale ...

... 1-7 . Scale 200 ft . to an in . 8 sheets , size 40 by 68 in . July 10 , 1926 ; 2 c . each July 16 ; F 51719-51726 ; Lee County engin- eering co . , Fort Myers , Fla . 41432-41439 Ft . Worth , Tex . Size 4 by 51⁄2 in . O May 1 , 1926 ; 2 ...