be used shall be for one or more of the following uses: 1. Assembly of electrical appliances , electronic instruments and devices, radios and phonographs; also the manufacture of small parts, such as coils, condensers, transformers and crystal holders.
Read it in the chapter →How this ordinance defines it
The operative definition is the local one. Codes routinely subdivide a category into tiers — “day care 2, family”, “group home 2” — and attach different permissions to each, so only Edinburg’s own text settles what this covers.