Of stainless steel with parallax free reading through counter thrusting vernier.
* fine adjustment by gear wheel and gearing
* Each protractor in box.
* magnifyer for better reading of vernier,
* graduation in 4 x 90 degree on ground plate,
* 12ths degree = 5 min. on vernier
Each protractor in box.
Typ 853-Size 1
Length of blade: 150mm
Typ 853-Size 2
Length of blade: 200mm
Typ 853-Size 3
Length of blade: 300mm
Typ 853-Size 4
Length of blade: 500mm
Spare blade stainless steel not hardened
Spare blade stainless steel hardened