According to GOST 14169-93 the name of the parameter is “Travelling block position”.
In the DEL-150 system the name of the parameter is “Travelling block position” or for short “TB Position”.
The parameter is measured by DPS-140( A), DPS-140 ( E), DPS-140 ( P) sensors.
The accuracy parameter depends on accuracy measurements of block height at the moment of gauge calibration and the sensor conjunction with a winding barrel.