Modern bedroom layout advocates simplicity, multi-functional furniture has become more and more the public 's choice, in order to meet the occasional visitors' living needs, a multi-function Sofa Bed is very necessary. Usually, multifunctional Sofa bed can be placed in the sitting room or study, act as a seat function; the guest comes in the evening, spread multifunctional sofa bed, spread bedding is a sleeping bed. Multi-functional sand is not only used for home life, in the current room, meeting room, lounge, multi-functional sofa bed are also useful. In the fatigue, shift interval, overtime after the working pay groups, let go of the multi-functional sofa bed to take a rest. Multi-functional sofa bed can also choose leather fabric, so that you can save space at the same time, but also bring users and visitors solemn, capable, dignified feeling, so more suitable for business talks, daily negotiations and other business activities. The sofa metal frame structure replaces the traditional fixed frame structure, which is generally commonly known as the iron frame. The iron frame can be moved according to the design angle and displacement, so as to realize the overall posture of the sofa from sitting posture to lying posture. There are a variety of holes on the iron frame to fix the sofa wooden frame. Multifunctional Sofa Bunk Bed,Multifunctional Foldable Sofa Bed,Multi Function Sofa Bed,Multifunctional Folding Sofa FOSHAN CITY LESHUN RONGHUI FURNITURE CO.LTD , https://www.ronghuifurniture.com
Measuring the straightness with a spirit level is a commonly used detection method in machining. There are two common operational errors: (1) The level is not strictly along a straight line during measurement, resulting in measurement errors caused by the horizontal error of the workpiece installation. Before making a straightness measurement on a workpiece, people often only pay attention to leveling the workpiece in the measurement direction to ensure that the level bubble does not exceed the indication range during each measurement, but ignores the installation level in the vertical direction. As shown in Fig. 1, the ruler working surface has a mounting horizontal error δ (div/1000 mm) in the direction perpendicular to the measurement, if using a level in this state