Gauge Points
| Scale Mark | Meaning | Comment | Value |
|---|---|---|---|
| p | π / 180 | radians to degrees | 1.745 * 10-2 |
| p' | 60 * (180 / π) | minutes to radians | 3.438 * 103 |
| p'' | 3600 * (180 / π) | seconds to radians | 2.063 * 105 |
| R | 180 / π | degrees to radians | 5.730 * 10 |
| n' | π / (180 * 60) | radians to minutes | 2.909 * 10-4 |
| n'' | π / (180 * 3600) | radians to seconds | 4.848 * 10-6 |
| m' | 1 / 60 | minutes to degrees | 1.666 * 10-2 |
| m'' | 1 / 3600 | seconds to degrees | 2.778 * 10-4 |
| C | √ (4 / π) | 1.128 | |
| C1 | √(40 / π) | 3.568 | |
| π | π | 3.142 | |
| S | 4 * π | 1.257 * 10 | |
| N | 2 * π | 6.283 | |
| M | 1 / π | 3.183 * 10-1 | |
| P | 1 / (2 * π) | 1.592 * 10-1 | |
| v | π / 6 | used on K scale for (π/6)*d3 | 5.236 * 10-1 |
| V | π * 4 / 3 | used on K scale for (π * 4 / 3)*r3 | 4.189 |
| q | π / 4 | 7.854 * 10-1 | |
| rq | 4 / π | 1.273 | |
| q' | π / 2 | 1.571 | |
| Z | 360 / 365 | interest on 12 months each of 30 days | 9.863 * 10-1 |
| e | e | 2.718 | |
| le | log10 e | log e to base 10 | 4.343 * 10-1 |
| l10 | loge10 | log 10 to base e | 2.3026 |
| d | 200 / π | grads in a radian (400g centegesimal system) | 6.366 * 10 |
| r10 | √ (10) | 3.162 | |
| c10 | 3√ (10) | 2.154 | |
| r2 | √ (2) | 1.414 | |
| r3 | √ (3) | 1.732 | |
| re | 1/e | 3.679 * 10-1 | |
| s | (60*(180 / π))2 | (p')2 | 1.182 * 1010 |
| s' | 60*(180 / π)2 | (p')2/60 | 1.970 * 107 |
| PS | 1 PS = 0.7354 kW | 7.354 * 10-1 | |
| HP | 1 HP = 0.7456 kW | 7.456 * 10-1 | |
| gF | Gravitational Acceleration (m/s2) | 9.81 | |
| gE | Gravitational Acceleration (ft/s2) | 3.22 * 10 | |
| EHP | English Horse Power (watt/HP) | 7.456 * 10-1 | |
| L | cms to ins | 3.937 * 10-1 |