My late wife worked in the Drawing Office business and had occasionally to visit the Test Laboratory of the (Government ) Stationery Office.
She told me that they had a machine to repeatedly dip a steel-nibbed pen in and out of an inkwell to determine the corrosion resistance of the nib and/or the corrosive properties of the ink. It must have resembled that drinking bird mantelpiece ornament.
She also told me of another machine there that tested blotting paper for its resistance to abrasion by elbows! All that and other testing was to ensure that items bought, using tax payers' money, for use in Government departments were (please don't laugh ) good value for money.
Best regards,
Swarf, Mostly!
Edited By Swarf, Mostly! on 07/06/2023 11:05:57
Edited By Swarf, Mostly! on 07/06/2023 11:06:46