Promoted
Lagos, Ikeja, 2 hours ago
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TDS Meter Water Quality Detector EC Test Pen Water
Brand New
Condition
Other
Brand
Other
Type
Store address
Verified
Verified
4
Lagos State • Ikeja
3 olayiwola street, off kudirat abiola way, Oregun, ikeja
Open
• Mon - Sat, 09:00-17:00
Measuring instruments are the third party standards required for measuring in order to obtain some attribute values of the target. Measuring instruments generally have scales, volumes and other units.
Scholars and navigators know very well that if the position of celestial bodies can be accurately measured on the sea, then sailors can know their latitude with certainty. To do this, we need precise measuring instruments.
Ptolemy once described the astrolabe (also called the astrometer). The larger ones are used in observatories and the smaller ones are used on ships. The use of the astrolabe requires the cooperation of three people - one holds the thumb ring on the astrolabe, one aims, and the other reads the results on the dial. When the ship shakes violently.
Safety tips
- Avoid paying in advance, even for delivery
- Meet with the seller at a safe public place
- Inspect the item and ensure it's exactly what you want
- Make sure that the packed item is the one you've inspected
- Only pay if you're satisfied
