This is called a Schmidt hammer or rebound hammer and is used to test the hardness of concrete. : r/specializedtools
Silver Schmidt OS8200 | Schmidt Rebound Hammers
Schmidt hammer - Wikipedia
HT-225Q Professional Digital Concrete Tester Hammer Integrated Wireles – Gain Express
Manual Rebound Hammers | Strength of hardened concrete
Rebound Hammer Testing Services | ECS
Does Rebound Hammer Test Results give Exact Concrete Strength?
Schmidt Concrete Test Hammers, Type L (N/mm2)
Rebound Hammer Test procedure for Concrete Hardness
Rebound Hammer Test: What You Need to Know - Gilson Co.
![Operation of the rebound hammer as schematic [12]. | Download Scientific Diagram](https://www.researchgate.net/publication/318750890/figure/fig1/AS:521089371435008@1501248795613/Operation-of-the-rebound-hammer-as-schematic-12.png "Operation of the rebound hammer as schematic [12]. | Download Scientific Diagram")
Operation of the rebound hammer as schematic [12]. | Download Scientific Diagram
Professional Test Rebound Electric Digital Schmidt Concrete Rebound Hammer Tester Resiliometer Concrete Schmidt Hammer - Sheet Metal Ruler - AliExpress
7 FACTORS INFLUENCING REBOUND HAMMER TEST OF CONCRETE - CivilBlog.Org
Digital Schmidt Concrete Testing Rebound Hammer - Buy Testing Hammer,Concrete Test Hammer,Concrete Rebound Hammer Product on Alibaba.com
Rebound Hammer Test on Concrete - Principle, Procedure, Advantages & Disadvantages
Mortar Rebound Hammer Test Hammer Build Brick Compressive Strength Testing 666389636898 | eBay
Concrete Rebound Hammer Tester Schmidt Hammer Mechanical Strength | eBay
Silver Schmidt Concrete Test Hammer | Myers Rebound Hammers
Estimate Concrete Strength Using Rebound Hammer - FPrimeC Solutions Inc.
