Pressure instrument with depth/altitude and time display

摘要: In a pressure instrument with depth/altitude and time display, measurement period from starting instant up to stopping of the is measured by measurement-time counting means, also another data acquired detecting pressures measurement. After measurements are taken when stop signal outputted, determination made whether or not periods longer than predetermined period. If period, this dive regarded as one for which it required store record, then between stored in memory. If, however, shorter no stored. Thus, although SCUBA (self-contained under water breathing apparatus) diving memory, non-SCUBA 2 3 minutes instrument, so that memory can be more effectively utilized.