Character Set | Length | Check Digit | Size, Module Width X, Print Ratio |
[A-Z]; [0-9]; [ - . $ / + % ] | variable (avg. up to 20 chars) | optional (Mod. 43) | H>=15% of L (H>=6.3 mm!); X>= 0.19 mms; Pr= 1:2 - 1:3 (>2.25 if X<0.5!) |
Applications | Extensive application in industry, authorities and business (non-retail); covered by ANSI MH 10.8 M-1983 and MIL-STD-1189; developed 1974 by INTERMEC. |
Notes | Very secure code-structure; self checking; supports multiple symbols (if first character is a space the next symbol is appended); supports distance reading (> 1m); only uppercase letters (+ special characters) can be encoded!
Code 39 Basics - YouTube Video |