b'oMparators ptical c oPOOPhoto Key Part No. Description For ModelsA OCN8 Large Centers and Vees HF600, HF750, HDV500B ORV2* 2-1/32" Capacity Rotary Vise4U000* HE/HB/HD400 and VB400C OGH1* Magnification CheckingHF750GraticuleOGH2* HF600D OCN7 Small Centers and Vees HF600, HF750, HDV500E 7P000 Centers and Vees HE/HB/HD400F OVH1 Vertical Glass Plate Holder HF600, HF750, HDV 500J 7U000* Vertical Glass Plate Holder HB400, HD300, HDV300, HDV400K 4H003 Rotary Vise with 1-1/4" Capacity HE/HB/HD400, HF600, HF750L 6U003 Rotary Work-stage VB400M 4H002 Fixed Position Vise with 1-1/4" Capacity HE400,HB400,HD400,HF600, N 4H004 Universal Vee Block on RotaryHF750BaseO 8170 31" Cabinet Stand HE400, HB400, HD400, VB300, VB4008171 22" Cabinet StandP 8276 Canopy and Curtains HE400,HB400,HD400,VB300, VB400*Product not shownstarrett.com 51'