State system for ensuring the uniformity of measurements. Scale automatic digital for total registration. Part 1. Metrological and technical requirements. Tests
Ventilation for buildings. Performance testing of equipment for residential ventilation. Performance testing of non-ducted mechanical supply and exhaust ventilation units, including heat recovery
Broaches with diameter from 70 to 130 mm for slitting holes with involute profile with round tail and centering at outside diameter with module from 3 to 5 mm. Construction
