| trial error |
A ruler: +/- 0.05J; B ruler: +/- 0.1J; C ruler: +/- 0.2J; D ruler: +/- 0.5J (within 20% to 80% of the upper limit of each gear)
|
|
| Swing shaft friction and air resistance |
> 120 times (measured by the number of swing arm swings)
|
> 120 times (measured by the number of swing arm swings)
|
| Pyramid characteristic Size three base edge length |
60Mm * 60mm * 60mm, height 25 +/- 0.7mm
|
60 * 60 * 60mm, height 25 +/- 0.7mm
|
| Operating environment |
Temperature 5~ 35 ℃, relative humidity does not exceed 85%
|
Temperature 20 +/- 10℃, Humidity < 85%, on horizontal panel
|