The Leica Plan 0.5x Auxiliary Objective (cat. no. 10446157) is an OEM front lens attachment for Leica MZ and M series stereo microscopes that dramatically extends working distance while reducing magnification for a wider field of view. With a 135mm working distance and M65 thread, it is the go-to solution for applications requiring generous clearance between the objective and specimen — from microsurgery and dissection to large component inspection and micromanipulation. This unit is in excellent condition with flawless optics, available at significant savings over new pricing. 🔬 0.5x auxiliary objective — halves magnification and doubles field of view on any MZ or M series zoom setting 📏 135mm working distance — exceptional clearance for hands-on work, instruments, or large specimens 🔩 M65 thread, 66mm outer diameter — direct OEM fit for Leica MZ & M series stereo microscopes 🏭 Plan optical correction — flat, well-corrected field across the full image area 🇩🇪 Genuine Leica component, manufactured in Japan ✅ Excellent condition — flawless optics, inspected and verified 🔧 Product Description The Leica Plan 0.5x Auxiliary Objective (cat. no. 10446157) threads directly onto the front of Leica MZ and M series stereo microscopes via the M65 thread, transforming the working distance from the standard ~100mm range to a full 135mm — a critical advantage in any application where hands, instruments, or equipment must fit between the objective and the specimen. The 0.5x factor reduces the effective magnification across the full zoom range by half, simultaneously widening the field of view for a broader overview of the work area. The Plan optical correction maintains a flat, well-corrected image field, ensuring sharp detail from edge to edge even at the extended working distance. With a 66mm outer diameter and M65 thread, it is a direct OEM fit requiring no adapters. This listing is for a unit in excellent condition with flawless optics — an exceptional value for surgical, dissection, or industrial labs that need maximum working clearance from their Leica stereo system. 🔎 Typical Applications Microsurgery and neurosurgery — clearance for instruments and hands Biological dissection and micromanipulation Large or tall specimen inspection requiring extended clearance Electronics assembly and rework with tools under the objective Entomology and natural history specimen work Any application where the standard working distance is insufficient 📊 Key Specifications Specification Details Manufacturer Leica Catalog Number / SKU 10446157 Magnification Factor 0.5x Working Distance 135mm Thread M65 Outer Diameter 66mm Optical Correction Plan Compatible Microscopes Leica MZ & M series stereo microscopes Condition Excellent — Flawless Optics Country of Origin Japan University and institutional customers are welcome to submit a purchase order. Please contact us for net terms and academic pricing.
