Digital Colorimeter S-Range 240V 1224 1 x Russian Doll –

1 x Russian Doll – Decorate your own Wooden Russian Dolls

DW A4 Counting board - Use for counting up to 120 and counting back into negative numbers

number patterns

It is equally suitable for a

6m x 140mm with a 1

Digital Colorimeter S-Range 240V 1224 1 x Russian Doll –Robust colorimeter featuring a stabilised power supply that maintains a constant light output from a 6V, 0. 15A tungsten lamp with infra red filter. There are two absorbance ranges and one transmission range. An automatic gain control provides automatic zeroing by simply pressing a switch and the instrument is insensitive to normal ambient lighting. The eight colour filters are held in a rotatable filter holder. The single cuvette holder takes 10mm