Middels tett papir av den mest brukte typen. Diameter: 12,5 cm. Porestørrelse: 15–20 µm. Filtreringshastighet: 35–70 s. Askeinnhold: ≤0,15 %. Vekt: 80 g/m². Innhold i
Prisgunstig digital stoppeklokke med fargekoder på funksjonene for å lette bruken.
Måler 1/100 rundetider og splitt-tider.
Har også alarm og dato.
Som på modellen over går det klart fram at dette er skolens stoppeklokke!
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