Here's a beautiful nickel silver micrometer by Elliot Bros. There is what appears to be a sliding button on the barrel which does not appear on the ones shown at Practical Machinist, which has a detailed thread on the company.
The firm of Elliott Bros was founded in 1804 by William Elliott. In 1850 he formed a partnership with his sons, Frederick & Charles and the firm became known as Elliott & Sons, operating at 56 Strand, London. Whilst their father had specialized in drawing instruments, Elliott Bros offered a wide range of mathematical, optical, and philosophical apparatus. The firm began using the signature "Elliott Bros London" in 1873 and “Elliott Bros (London) Ltd” in 1916. During this time they were located at 449 Strand, London. Elliott Bros (London) Ltd appear to have discontinued producing surveying instruments around WW1 and began to focus on developing electrical equipment.
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| Thanks, Peter! |
Can somebody please explain the converging French and English graduations? Thanks.
ReplyDeleteI think it might be the "paris inch" https://en.wikipedia.org/wiki/Paris_inch
ReplyDeleteOh, o' course! -- the Paris inch I just recently learned about right here at your deeply edifying and profoundly educational blog! Thanks.
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