Details
A penetrometer,
by Baird & Tatlock, London Limited, the brass mechanism on iron stand with adjustable feet, with Certificate of Examination of the Hardened Penetrometer Needle from the National Physical Laboratory, contained in the original teak carrying case -- 22in. (55.9cm.) high
See Illustration
by Baird & Tatlock, London Limited, the brass mechanism on iron stand with adjustable feet, with Certificate of Examination of the Hardened Penetrometer Needle from the National Physical Laboratory, contained in the original teak carrying case -- 22in. (55.9cm.) high
See Illustration