The Gilson HM-500 Pocket Penetrometer is a lightweight, direct-reading soil device giving instant information for classification of cohesive soils on site or in the lab as required by OSHA for trenching and excavation inspection. The HM-500 Pocket Penetrometer is a hand operated device that uses a calibrated spring to measure penetration resistance of the ¼” diameter piston when pushed into soil. The permanent scale on the piston barrel reads approximated unconfined compressive strength from 0 to 4.5 tons per square foot or kilograms per centimeter squared (0 – 4.5tsf2 or kg/cm2). An indicator sleeve retains reading after piston is released. And use in very soft soils the Gilson HMA-15 Pocket Penetrometer Adapter Foot Attachment increases the surface area of the loading piston to areaon, the reading should be divided by 16 to get the correct unconfined compressive strength of the material tested. The HM-500 Pocket Penetrometer’s calibrated spring as well as the whole device is plated steel for rust resistance for a long service life, making the Gilson HM-500 Pocket Penetrometer the right choice for your soil testing whether in the field or the lab. With Gilson’s complete family of soil testing equipment, offering a wide range of performance, features and capacities, Gilson has the right equipment for your accurate soil testing needs. Be sure to check out these and all our products listed in the Gilson catalog and on the Gilson website. Gilson, your industry leader for material testing equipment. Pocket Penetrometers: Gilson HM-500 Pocket Penetrometer For more information go to https://www.globalgilson.com/pocket-penetrometer. pocket penetrometer / tds meter / soil compaction test / dynamic cone penetrometer test / cone penetrometer test / soil penetrometer / npk test / soil probe rod / soil penetration test / penetrometer for sale / dynamic cone penetration test / penetrometer soil / penetrometer test / hand held penetrometer / pocket penetrometer wiki / how to use a penetrometer / concrete pocket penetrometer Show more