SP30 Eyepiece x15 Widefield - Microscopes

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An affordable pH meter which makes it easy for both technical and non-technical people to measure pH on the spot. Temperature is displayed simultaneously and is automatically compensated for. 5 buffer values are memorised and the meter has a fully automatic calibration procedure with 1 or 2 point calibration. The electrode is replaceable and is easily changed when exhausted by a snap-in replacement. Battery life is monitored and the meter will switch off automatically should you leave it on accidentally. Fully sealed against water and dust and it floats if accidentally dropped into liquid. Supplied with protective cap, electrode removal tool, batteries and instructions. To use this meter you will also need a pH buffer solution for calibration, and storage solution for the electrode.

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Combi 2 K102 Map Measurer - Double faced with a pencil grip, this accurate measurer makes tracing distance from a map quick and simple. With large dials and a magnifier to make reading off the distances easy. Map measurer with 7 scales, 1:25 000 - 1:2 000 000, 1"/nautical mile

Romer & Linear Scale Card - Handy romer and linear scales on clear plastic sheet. Scales for 1:25 000, 1:50 000 and 1:63360, plus conversion from/to miles and kilometers. Card 13 x 8.5cm

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