This [Gemred] 2&1stainless steel digital angle finder use in the video have gain the US/ UK/ DE Amazon choice, Amazon US NO.1 best seller, which combined the rule and internal & external angle finder function.
Buy link: [ Ссылка ]
1. Resolution 0.1°, digital display.
2. Internal angle&external angle ,fit to any angle
3. Incremental Measurement: Zero out at any angle
4. Hard stainless steel rulers
5. Lock fuction : For read it easily, GemRed angle finder could be locked at any angle.
