1. graduated: The product consists of a caliper with two plates that overlap part of the length. The bottom plate is calibrated in millimeters and the top plate is transparent and marked with a cross-shaped thin line cursor.
2. Test table: monitoring gauges are used to monitor cracks in walls and how they evolve over the measurement time. First polymer with easy-to-read measuring grid.
3. Fixed Post: Redesigned fixing posts make it easy to fix the two pieces without the need for glue.
4. Easy to record: Provide a recording sheet and secure it with screws. The opening or closing of the fissure can be recorded on the record sheet.
5. Lightweight and convenient: The product is made of premium acrylic plate, it is small and easy to carry, lightweight and easy to use.

Specification:
Item Type: Monitor
Product material: acrylic
Use: measuring instrument
Weight: 36g/1.27oz

Package Included:
2 x Monitor

4 x Expansion tube
4 x Screws
1 x Instruction Manual