Ruler with end graduations. Resolution:

• No. 4R - 8ths, 16ths, Quick Reading 32nds, 64ths
• No. 36 - 32nds & 1/2mm on one side, 64ths and mm on reverse
• No. 3R - Quick-Reading 10ths, 64ths and mm on reverse
• No. 36 - 32nds & 1/2mm on one side, 64ths and mm on reverse
• No. 30 - 1/2mm one side, mm and 1/2mm on reverse
• No. 34 - mm & 1/2mm on one side, Quick-Reading 10ths, Aircraft Quick-Reading 50ths on reverse