Check the listing for details. Comptometer Model H Felt Tarrant Instruction Operations Manual year 1921 37 pgs.. Condition: New. Listed at 16.95 USD. Comptometer Model H Felt Tarrant Instruction Operations Manual year 1921 37 pgs. Reproduction manual (to be printed in black and white) covering,Mechanical operations,Decimals,Clearing options, 4 arithmetical rules,Multiplications,Short cuts,Addition,Subtraction,Division, Practice pictures Know your instrument. Glossy protective cover front Heavy card stock front and back covers.Comb binding8 1/2 X 11" format, lay flat when openMade in the USA If you are looking for a hard to find manual or parts manual please let me know. I have a large database and have only listed a fraction of thus far.If you are unhappy with your purchased in anyway please contact before leaving feedback. I would much rather send a replacement or a refund than have an unhappy customer. Things happen. Lost in the mail is a common problem. Sometimes tracking doesn't update in the progression of the mail chain. I will be happy to work with you.