State system for ensuring the uniformity of measurements. State primary standard and all-union verification schedule for means measuring quantity of heat
Direct acting indicating analogue electrical measuring instruments and their accessories. Part 1. Definitions and general requirements common to all parts
Rectangular iron all-cast moulding boxes with simplified wall profile having inside dimensions: length from 400 to 500 mm, width from 300 to 400 mm, height from 75 to 200 mm. Construction and dimensions
€10
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