... work distance the condensing lens,the plan field achromatic objective and phase contrast Installment,therefore may use each kind ... (Pick out parts) 1 pair3. PLL objective: 4X,40X 1 each4.Phase contrast objective:10X,25X 1 each5. Phase contrast annular ... lamp:60V/20A (spare) 1 unitPick out partsEyepiece 20X,Objective 60X,Photo transform objective,Photography attachment,Viedo attachment,Digital camera.