I understand there are slight thread pitch differences in this M39/LT39. 1. Will this adapter screw comfortably into the female end of an old Canon M39 "Rangefinder" type extension tube? 2. Will this also seat a 20 mm 4X microscope objective which I assume is true to the RMS standard?

Name: RMS female to M39x1 (LTM) male thread adapter
Brand: RafCamera
SKU: 763461171305
Price: 26 USD
Availability: InStock

Hi Bob. Yes, it should fit. We make these adapters with large enough tolerances to fit both LTM and M39x1 threads. Thank you. Raf.

RMS female to M39x1 (LTM) male thread adapter

$26.00

In stock

SKU

763461171305

Warehouses	Available Stock
Belarus	10
USA	2

RMS female to M39x1 (LTM) male thread adapter

This adapter allows using microscope objectives with RMS thread on cameras with M39x1 mount.

More Information
Adapter Front Side	RMS
Adapter Rear Side	M39x1
Adapter Added Length	4mm
Material	Aluminium
Manufacturer	RafCamera
Advantages	Design: Many of our products were inspired by customers, and have great application value. Material: Aluminium alloy 2024 (used in aviation and space industry). It is light and durable. Technology: Cutting from solid bars provides the highest possible product quality. Tolerances: A bit tight fit is better than too loose fit for imaging equipment.