By Pezza69ers, 19 October, 2014 Category Other Distinguishing marks Thomas mercer Long Description Thomas mercer measuring device model number 101A. Made in Thomas mercer ltd St albans England. In a hard wooden box. Sorry I don't know any more about the item. Photos For Sale? Yes Log in or register to post comments Select ratingGive it 1/5Give it 2/5Give it 3/5Give it 4/5Give it 5/5Cancel rating No votes yet