Spreadsheet: 52814d1252618136-finding-the-middle-cell-in-a-column-of-numbers-roman-numbers8
Sheet: Sheet4

1655 | 70 | 1585 | 5.5 | 25 |  |  |  |  |  |  |  |  |  |  | 6.5
Input | Allowance | workable | folds | gradiant
 |  |  | 2116 track | 25mm | Gradiant folds with Flaps |  |  |  |  |  |  |  |  | 2116 track | 70mm | Gradiant folds with Flaps
 |  |  | gear drive | 90mm | i | ii | iii |  |  |  |  |  |  | gear drive |  | i | ii
 |  |  | 1585 | 1 | 188 | 9 | 179 | 174 |  |  |  |  |  | 1585 | 1 | 118 | 9 | 109
 |  |  |  | 2 | 238 | 9 | 229 | 224 |  |  |  |  |  |  | 2 | 168 | 9 | 159
 |  |  | take middle fold as datum{ | 3 | 288 | 9 | 279 | 274 |  |  |  |  |  | take middle two fold as datum | 3 | 218 | 9 | 209
 |  |  |  | 4 | 338 | 9 | 329 | 324 |  |  |  |  |  |  | 4 | 268 | 9 | 259
 | finished drop of blind |  |  | 5 | 388 | 9 | 379 | 374 |  |  |  | finished drop of blind |  |  | 5 | 318 | 9 | 309
 | 1655 |  |  | 1/2 flap | 194 |  | 190 | 215 |  |  |  |  |  |  | 6 | 368 | 9 | 359
 |  |  | 2004 bottom weight bar | 40mm |  |  |  |  |  |  |  | 1655 |  |  | 1/2 flap | 184 |  | 180 | 1584
 |  |  | 2116 track | 25mm | Gradiant folds with Flaps |  |  |  |  |  | drop | 1000
 | 1120 |  | gear drive | 90mm | i | ii | iii |  |  |  | pockets | 4.5 |  | -50 | 1 | 147 | 9 | 138
 | 3.5 |  | -50 | 1 | 270 | 8 | 262 |  |  |  |  |  |  | -25 | 2 | 197 | 9 | 188
 |  |  | 0 | 2 | 320 | 8 | 312 |  |  |  |  |  |  | +25 | 3 | 247 | 9 | 238
 |  |  | +50 | 3 | 370 | 8 | 362 |  |  |  |  |  |  | +50 | 4 | 297 | 9 | 288
 |  |  |  | 1/2 flap | 185 |  | 181 | 1117 |  |  |  |  |  |  | 1/2 Flap | 148.5 |  | 144 | 996
 | 1800 |  |  |  |  |  |  |  |  |  | drop | 2500
 | 7.5 |  | -50 | 1 | 90 | 10 | 80 |  |  |  | pockets | 6.5 |  | -50 | 1 | 209 | #N/A | #N/A
 |  |  | -50 | 2 | 140 | 10 | 130 |  |  |  |  |  |  | -50 | 2 | 259 | #N/A | #N/A
 |  |  | -50 | 3 | 190 | 10 | 180 |  |  |  |  |  |  | -25 | 3 | 309 | #N/A | #N/A
 |  |  | 0 | 4 | 240 | 10 | 230 |  |  |  |  |  |  | +25 | 4 | 359 | #N/A | #N/A
 |  |  | +50 | 5 | 290 | 10 | 280 |  |  |  |  |  |  | +50 | 5 | 409 | #N/A | #N/A
 |  |  | +50 | 6 | 340 | 10 | 330 |  |  |  |  |  |  | +50 | 6 | 459 | #N/A | #N/A
 |  |  | +50 | 7 | 390 | 10 | 380 |  |  |  |  |  |  |  |  |  | #N/A | #N/A
 |  |  |  | 1/2 Flap | 195 |  | 190 | 1800 |  |  |  |  |  |  |  |  | #N/A | #N/A
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1/2 Flap | #N/A |  | #N/A | #N/A
 | 2500 |  |  |  |  |  |  |  |  |  | drop | 3000
 | 9.5 |  | -50 | 1 | 63 | 11 | 52 |  |  |  | pockets | 10.5 |  | -50 | 1 | 60 | 10 | 50
 |  |  | -50 | 2 | 113 | 11 | 102 |  |  |  |  |  |  | -50 | 2 | 110 | 10 | 100
 |  |  | -50 | 3 | 163 | 11 | 152 |  |  |  |  |  |  | -50 | 3 | 160 | 10 | 150
 |  |  | -50 | 4 | 213 | 11 | 202 |  |  |  |  |  |  | -50 | 4 | 210 | 10 | 200
 |  |  | 0 | 5 | 263 | 11 | 252 |  |  |  |  |  |  | -25 | 5 | 260 | 10 | 250
 |  |  | +50 | 6 | 313 | 11 | 302 |  |  |  |  |  |  | +25 | 6 | 310 | 10 | 300
 |  |  | +50 | 7 | 363 | 11 | 352 |  |  |  |  |  |  | +50 | 7 | 360 | 10 | 350
 |  |  | +50 | 8 | 413 | 11 | 402 |  |  |  |  |  |  | +50 | 8 | 410 | 10 | 400
 |  |  | +50 | 9 | 463 | 11 | 452 |  |  |  |  |  |  | +50 | 9 | 460 | 10 | 450
 |  |  |  | 1/2 Flap | 231.5 |  | 226 | 2494 |  |  |  |  |  | +50 | 10 | 510 | 10 | 500
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1/2 Flap | 255 |  | 250 | 3000
 | 2500
 | 9.5 |  | -50 | 1 | 63 | 11 | 52
 |  |  | -50 | 2 | 113 | 11 | 102
 |  |  | -50 | 3 | 163 | 11 | 152
 |  |  | -50 | 4 | 213 | 11 | 202
 |  |  | 0 | 5 | 263 | 11 | 252
 |  |  | +50 | 6 | 313 | 11 | 302
 |  |  | +50 | 7 | 363 | 11 | 352
 |  |  | +50 | 8 | 413 | 11 | 402
 |  |  | +50 | 9 | 463 | 11 | 452
 |  |  |  | 1/2 Flap | 231.5 |  | 226 | 2494
 | 2500
 | 9.5 |  | -50 | 1 | 63 | #N/A | #N/A
 |  |  | -50 | 2 | 113 | #N/A | #N/A
 |  |  | -50 | 3 | 163 | #N/A | #N/A
 |  |  | 0 | 4 | 213 | #N/A | #N/A
 |  |  | +50 | 5 | 263 | #N/A | #N/A
 |  |  | +50 | 6 | 313 | #N/A | #N/A
 |  |  | +50 | 7 | 363 | #N/A | #N/A
 |  |  | -50 |  |  | #N/A | #N/A
 |  |  | -50 |  |  | #N/A | #N/A
 |  |  |  | 1/2 Flap | #N/A |  | #N/A | #N/A
 | 1655 | 70
 | 1585
 | 5.5 |  | -50 | 1 | 188 | 202 | -14 | 56
 |  |  | -50 | 2 | 238 | 202 | 36 | 92
 | cannot get this to |  | -50 | 3 | 238 | 202 | 36 | 128 |  |  | 288
 | read 0 |  | -50 | 4 | 238 | 202 | 36 | 164
 |  |  | 0 | 5 | 213 | 202 | 11 | 175
 | like above |  | +50 | 6 | 263 | 202 | 61 | 236
 | the even numbers |  | +50 | 7 | 313 | 202 | 111 | 347
 | seam to work |  | +50 | 8 | 363 | 202
 |  |  | +50 | 9 | 413 | 202
 | change B77
 | to
 | 6.5
 |  |  |  | 1/2 Flap | 228 |  |  | 228
 |  |  |  |  | 182
 | 5 |  |  |  | 413