Recommendations Concerning the use of Portable Photometers: Recommendations concerning the Use of Portable Photometers,Particularly for Street Lighting Measurements

Abstract

The following notes, drawn up by the Technical Committee of the Society, are intended to afford guidance in the use of portable photometric instruments. Attention may be drawn to the existing British Standard Specifications dealing with their construction and accuracy, No. 230, 1935 (Visual Type) and No. 667, 1936 (Photoelectric Type).