Sell refractometer( Gemological Refractmeter)

HNE601: Gemological Refractmeter The Gemological Refractmeter can be used for measuring the Refractive index of GEMS. Scale range: 1.30-1.81 RI Minimum scale: 0.01 Size (mm): 130×70×33 Weight (g): 350 Mini Monocular 8×20 8×20mm Mini Monocular with fully coated lenses Field: 5.5º, Object: 96m/1000m Size(mm): 68×37×37 Weight (g): 50 Microscope 40× A 40× microscope can be made by assembling 5 additional pre-lenses in front of the objective lens of an 8×monocular without the need for other accessories. It is multi-functional in use including the appraisal of stamps, calligraphy, paintings, seals, and the quality of presswork, etc. The product features a simple design, convenient assembly and disassembly and is easy to use. Size(mm): 37×50×165 Weight (g): 100 Verticality and levelness tester This is a special instrument used for measuring the vertical and horizontal levels of in-door structures and lines. It is a new product filling a gap in our country’s measuring technology. Scale range: ±5° Minimum scale: ±3 Features: 1. Simple and visual method of measurement. 2.Highly accurate. Size(mm): 225×106×60 Weight (g): 400