Product Code: 96438
These 6" (152mm) self adhesive rulers are printed on a special formulated paper with an 18% grey reflective value. 18% grey is considered to be neutral on the grey scale which means the whole of the visible colour spectrum would be recorded proportionately as the correct shade of grey on panchromatic film. These labels also provide a neutral tone for a meter reading taken to give the correct exposure from reflected light.
Supplied in packs of 100.
