glassworker. The developer group narrowed down to two specific users who lie on the two extremes of the work environment spectrum: dentist (medical facility) vs glassworker (workshop). The spectrum here is made on the basis of the nature of the work environment from it being very sterile all the to being greasy and dusty. The two user scenarios would allow the chair to cover the requirements and options for the rest of the users in the spectrum (see Appendix 7). Thereby, scenario creation was vital to the chair development to design for their day to day work practice and habits. ErgonomicAnalysis Ergonomic Analysis is an evaluation to inspire redesign or evaluate the product to suggest corrections through adjustments or equipment replacement (Martin & Hanington, 2012). The analysis is made using five interrelated criteria which are size, clearance, reach and posture, this ranging from micro scale (finger, hand, tool) to macro scale (limb, body, environment) (Martin & Hanington, 2012). The support chair is a separate branch of ergonomic office chairs (Robertson, Amick, DeRango, Rooney, Bazzani, Harrist & Moore, 2017). The very nature and definition of the chair is required to be ergonomic. The method helped the developer group work with predefined specifications for dimensions, seat height, backrest angle and seat angle during the product development. Since the chair is developed and produced in Sweden for the European Market, the ergonomics have to align to Möbelfakta (See Appendix 1). The developer group refers to the Möbelfakta specifications to understand dimensions for the European users which are tested. Frapett is a B2B ergonomic chair manufacturing supply company. To receive large orders by tenders for the public sectors, is one of their main stream of sales (Elgmo, 2017). Möbelfakta requirement is of utmost importance to be able to apply for the tenders. Reverse Engineering Reverse engineering is a method of discovering the technological principles of a device, object, or a system (Eilam, 2005). It is done by extracting its properties, dimensions, and analyzing its structure and functions to transform it into a new product, device, or system. without using or duplicating the original (ibid). It’s been commonly used in the analysis of hardware for commercial or military uses (ibid).
17