Assessor for test hammer and assessor for tension spring are special test instrument according to national measurement test regulation (concrete test hammer) JJG817-93, main applied by concrete test hammer identifier organizations and manufacturers, it is the only instrument for assessing test hammer.

Parameters:

Rigidity of test anvil: HRC60±2;

Length of pointer: 27.5±0.1;

Strength weight: 2kg±1;

Composition of the assessor: base, steel anvil, test hammer fixer, rebound handle, assess frame for tension spring, positioner plate, horizon slider, strength weight, a set of assessor tool for tension spring;

Specialized caliper；

King size pointer(backup)；

Socket head wrench；

Dust filter cover；