Cement specifications clearly needed a way of prescribing the fineness of cement, and the sieve method was written into standards in the absence of any more useful measure, despite the fact that it provided little guidance as to the likely quality of the cement, particularly as the number of different grinding technologies multiplied.
Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 130,024 pages of information and 205,413 images on early companies, their products and the people who designed and built them.
js44) Aftermarket dual-tip SEAL PULLER.Our large HCP9801 style puller features curved dual tips on a rounded head allows you to "lever out" large, thick rubber seals safely and properly, while the smaller HCP9961 puller works better with smaller seals (such as on your shifter side cover).
FEATURED COLLECTION. The Paul and Paula Knapp Collection of Internal Combustion Engines (CLICK HERE to view the entire Knapp miniature engine collection.)Our featured exhibit is the Internal Combustion Engine Collection on loan from Paul and Paula Knapp's Miniature Engineering Museum in Arizona.