Toronto. The Reprovit IIa is a high end professional copy stand. The connector for the framing/focussing light can be exchanged for a visual right angle 5x magnifier for visual framing/focussing a 2D or 3D subject. This device is a PAMOO painted to match the Reprovit II a stand. Its replacement is coded as 16 488 by Leitz.
Any modern-day SLR has through the lens framing/focussing eliminating any need for the over engineered and incredibly well made 16 488 (PAMOO) and the associated focoslide and bellows.