1066D Rule is designed for engineer or other measurements requiring tenths and feet. * Graduated measurements in feet, 1/10ths and 1/100ths of feet. Regular outside marking in feet, inches and 1/16ths. * Decimal points on engineer's scale prevent reading errors. * Clear abrasive-resistant coating protects markings.
This is a 1066D. It is primarily used for its Engineering scale, which is inside-read, which IS on the proper side for it to be used as intended. If you want a Red-end rule (two-way), that can be read flat both left and right, get a 966.