9 Digital display devices, namely, displays for control units with radio connection to sensors; pressure gauges with radio transmission of measured values; electronic sensors with radio transmission of measured values; remote measuring instruments with radio transmission of measured values; measurement sensors with user interface via a mobile computer application; measurement sensors with connection and data exchange to mobile devices; sensors connected wirelessly to a network interface or wireless network; control devices, in particular with monitoring and remote control access, namely, electrical controlling devices; transmitters with radio transmission of measured values; monitoring apparatus with radio transmission; protractor; monitoring apparatus and monitoring instruments, namely, process monitoring apparatus and instruments electrical control devices; control units for sensors; sensor switches, namely, pressure / temperature switches and sensors for monitoring, controlling, and switching hydraulic or pneumatic systems; electric sensors for measuring instruments; electric sensors for system control; wind speed sensors; rotation measurement sensors; measuring apparatus; length sensors; force transducers; force sensor resistors; calibration equipment; calibration apparatus; weight measuring instruments and measuring apparatus, namely, load cells; housings for measuring instruments; electronic sensors; electronic process control units; electronic measuring instruments; electronic sensors; digital sensors; digital process control equipment, namely, electrical or electronical controlling devices; digital measuring instruments, namely, digital measuring sensors and transmitters; digital measuring devices, namely, digital pressure, temperature, force, level, gas, flow sensors; data transmission instruments; computer equipment for use for remote readings on measuring instruments