Shardlow Micrometers
of Meadowhall, Sheffield .
1933 Shardlow Check Reading Micrometer patented by Ambrose Shardlow and Co and Herbert Orr. 'Linear-dimension gauges. AMBROSE, SHARDLOW, & CO., Ltd., Washford Road, Attercliffe, and ORR, H., 37, Huntley Road, both in Sheffield. Sept. 12, 1933, No. 25273.' [1]
1945 Advert for micrometers. [2]
1951 Advert for micrometers. [3]