Four sheets (8 pages) of paper measured by a micrometer will require the number of pages opposite the readings to bulk one inch.
| Caliper | Pages | Caliper | Pages | Caliper | Pages | ||
| 4 Sheets | Per Inch | 4 Sheets | Per Inch | 4 Sheets | Per Inch |
| .0055 | 1,454 | .0125 | 640 | .0195 | 410 | ||
| .006 | 1,332 | .013 | 616 | .020 | 400 | ||
| .0065 | 1,232 | .0135 | 594 | .0205 | 390 | ||
| .007 | 1,142 | .014 | 570 | .021 | 380 | ||
| .0075 | 1,066 | .0145 | 552 | .0215 | 372 | ||
| .008 | 1,000 | .015 | 534 | .022 | 364 | ||
| .0085 | 942 | .0155 | 516 | .0225 | 356 | ||
| .009 | 890 | .016 | 500 | .023 | 348 | ||
| .0095 | 842 | .0165 | 484 | .0235 | 340 | ||
| .010 | 800 | .017 | 470 | .024 | 332 | ||
| .0105 | 762 | .0175 | 456 | .0245 | 326 | ||
| .011 | 728 | .018 | 444 | .025 | 320 | ||
| .0115 | 696 | .0185 | 432 | .0255 | 314 | ||
| .012 | 666 | .019 | 420 | .026 | 308 |
| Caliper | Pages | Caliper | Pages | ||
| 4 Sheets | Per Inch | 4 Sheets | Per Inch |
| .0265 | 302 | .0335 | 238 | ||
| .027 | 296 | .034 | 234 | ||
| .0275 | 290 | .0345 | 232 | ||
| .028 | 286 | .035 | 230 | ||
| .0285 | 280 | .0355 | 224 | ||
| .029 | 276 | .036 | 222 | ||
| .0295 | 272 | .0365 | 220 | ||
| .030 | 268 | .037 | 216 | ||
| .0305 | 262 | .0375 | 214 | ||
| .031 | 258 | .038 | 212 | ||
| .0315 | 254 | .0385 | 208 | ||
| .032 | 250 | .039 | 206 | ||
| .0325 | 246 | .0395 | 202 | ||
| .033 | 242 | .040 | 200 |
| FORMULA: | EXAMPLE: | |
| To determine the bulk of a given number of pages: | 8 pages caliper .016. What will 320 pages bulk? | |
| Caliper 8 pages (four sheets) and then multiply the | 320 x .016 = 5.120 / 8 = 640 | |
| result by the given number of pages and divide by 8. | Answer: .64 inch or approx. 5/8" |
| FORMULA: | EXAMPLE: | |
| To determine the number of pages per inch: Caliper | 8 pages caliper .016. How many pages per inch? | |
| 8 pages and divide the number of points into 8,000. | 8,000 / .016 = 500 | |
| Answer: 500 pages per inch |