DETAIL OF THE MEASUREMENT OF A. BASE) EXECUTED WITH PINE RODS, IN THE DEHRA DUN. 365, 
February, 1819. Sy as iy eae egh x nee 
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fe 3 | cCOMPARATOR.| - i THE RODS. 3. | : — 3 2 we - 2 z : 
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= : 33 r) s REMARKS, 
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| DATE, g e4. Gees 34 45 Pel 2 ce pales 
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\ assis Langvette, | Nonios eee ‘i 40 108, ae een 25 is ‘The measurement commenced 2'6, inches, behind the point marking the extremity of the base, 
| sta) az le 4s+te6-6) 1095) .... Bay ‘ i : ; 
| petoliekel ne =o 41 65-4] 1017] “10 2) ; 
| 4 014 '457] 052] .... 5 7:9 , BC 
| lala |: o7 |s92| 090) 6 7-0 ae 1 40055.) .0425 ; 
| 1.12 {61-1 TMS | races 8 4:8) } | 6 2 : 3 Se 
} 3] Q2 |1 52 67-7 1108 5 132) ec 0 09 00 E.| ‘ogos 0 
| ~|2 30 |720} 1098) .... cone 9 22 2 S= 
947 |758 1107 13 21°3 0715) wees 
| 343 [840] 1102s... 0K,9 BH A:0 ‘The!2:3 rod fallsjshort of pidket No. 1,-by 1:02 feet exactly. 
| 330 |77:0] 1053) 18 1°3| -0:930) .... aleg 35 ' ites yby Ay 
| 4\ 12 |2 51 (81-8) 1162] .... mee 10 57 1 19.13B. ace 
| 2 87 {76:3 1130 10 128 0:850 aan 
221 j715) il)... eal ae Tr 65) 0 98 355’ -0035 Wi 0] =| | Thisjhypothenuse concluded the day’s work—The plummet and tripod were set to mark the 415 rod + inch in 
5] 1 J ee Be g Ae 13 ood i 0:02) advance. In the morning found correct. 
I Ly. . eee . ' 
wi |o 87-0| 1963] 0 2° 658 2 .| 0183 15:2 
—— | 5] 6] 72 |2 18 87:0 ea 10 2:6) 0'658 fave ae @ 20D A new nonius was fitted on to the 4:5 rod, it matked here0'315. 
1 “ames on a eee weer Zz We} 
| 5 12° }77°5 Hee 0:828 ies The new nonius marked “330, after this the old one was not observed. 
e az pe ue eek The 2:3 rod overshot the 2d pin by 1-32 feet exactly. f 
2 7 : 
Ban hoa AES eis dah ‘ere the new nopius was observed. S: | 
2 04 79:5 1143) 4 12-5) 0:888 
153 (68.6 1122 seee Bride 
145 |66°2 1111 12) = 12:7; 0:650 
135 |62-7 1093 Sapo Ob Set the tripod to mark the point between the 4:5.and 1:2 rods, Tt was ‘04 inch in advance of the 4°5 rod, which 
1 04—/45-4 1172 7 154) 0713 = 5 RESTA “ ee et 
rae latter tn the morning was found to haye expauded O'2 ‘inch. The mean of the evening and morning is given. J r 
Si 0 57 |48-9] 1398). .,.. one g 6 D bang : g Bs 8 
0 38 |52°8 1205} -21 3/5 0-948) 
58° 229 rico wees 
° aan aoa ae 8 102 saz | Theend of the 2:3 rod overshot the 3d picket 117 inches. 
74 |217 |746 1143 Il 6:3) “0.678 0 3310} ‘0186},—11-70] 0-8) {3:9 ‘This|hypothenuse was commenced from the 3d picket 250° feet, having been vitiated by. a mhistake, 
2 og4)72-4| i136]... ar | ~ ; 
215 (72:7 1129) 7 14-4)" 1-025)" 
{2 03 |697 1116 sree ttee 
153 |66:3) 1099] 10 30] oss | ; 
14s |643 1053) sees posd 
13s |62-4 1085; 10 2:3) .0:758 San Sa ec 
117 (56-4 1059 aee 4 ce Peni hase Set tripod to +. atl in’adyance of the 44 rod. “Surrounded it with a chain of stands, and posted asentry. Commence! 
———— 8] 8|.2 J2 35 |702 1073) 0 21:2) 0:758) 6on te 2 1 0135 E.| +0820| +- 0:08) 1) 3/6) 1:5 oy the 8th, by pushingout the Janguétte to meet the, wire, resumed the former nonius. ‘The new one marked 
223 |658 1048 aan are here 0:310. ; 
232 (61-3 1022 9) .03:2 1:093 i | f 
148 |55-5 1001 Bet 2 New nonius marked 0:240. Set the trip i in advance of the 4°5 saad 0:298 inches. i 
| 9-4 |2 37 1725 1083| -12 183 755 0.25 0B] ‘0106 0:30) 29 Commence by puskingout the Ian, hette to meet the wire of the plummet. aantty the point on the tripod. 
—. 075 29 | B P ae 6 the p 
239 j|716) 1081 Aoae Bbee K dion 3 New nontus‘0:263. 
— |2 48 1703 61 22) 13 0:700} Shag sane vane ts 
2 48 \722 1073 000 mate 10) 918) 101725) sore . New nonius 0:35. 
2 49 12) 1082} 11 138} 1020] .... seen | tees { 
2 48 \699| «1051)°.... nate 10° 82) 0720) .... _ |New nonius 0308. 
i 241 |71'0) 1071 6 16:5) ~0710) .... poont |) cdac f 
233 |Z1s0| posal 2... eee 4 25) 0670 New nonius 0295. ; ‘ 
10|6 |2 39 \7171 10761 4 160) gs! ae 0 40 55 E.| ‘O25 (wl 
2 40 |720 4083| .... ae New nonius 0:319.” 
2 37 «|654 1023 8 10:0) 01695 
| .|237 162 3 O98 3. dtl New nonius 0250." | f 
’ | 2 05 |57-8| 9904/3 17-8] “ose , ~ Hee 
|i 41 [54-0 998] ©. a J J: ss New nonias 0/313, ” ‘ 4 ; 
* 198 (52:0) 998 7 33 0695 Set tripod in advance df the-2:3 rod O'L inch. ‘i 
a (4) : Fee veale cen 1117} +8 ~ 545] * “0-700! " + 0:10 Commenced by pushiigout the languctte,to touch the wire, marking the point onthe izipod. 
, ; 1117 eet Fle i 
110 {55:0 1055 0063 r 
1 3g \66:0 1120 soos cae : 
2 11 |650| 1059] 7 1271 ogg bo . im 
il| 5 |2 12 |670 1078 agate 5008 0 58108.) +0716 85 
é 213 \680| 1086] 18 215) 14140 ; : : 3 
eae | el eee oul ff fi} ‘ = 
H 36 70;888| 313 321:9 280% tee 80} | 3:3]. 40'8) ¥+ 
