Adjustable Slit with Micrometer Actuator.
This is a standard SPEX adjustable knife-edge slit for a monochromator. The main housing is 4 inches in diameter and 2 inches deep. The slit is located approximately at the mid point of the housing. The slit dimensions at maximum opening are 22mm tall, and 3mm wide. The micrometer is graduated in 2 micron divisions, and reads correctly (when set to zero, the slit has just closed).

The slit is in excellent condition and works properly throughout its range.



BMI Surplus, Inc. has a huge inventory of used, new and pre-owned Optical Equipment for sale.
We will work with you individually to find the perfect set up for your application.
Buy online or give us a call at 781-871-8868.We have experienced customer service representatives standing by ready to help you!

BMI Surplus, Inc. is a dealer in used and sometimes new Surplus Scientific & Industrial Equipment - we cater to clients in search of items to be used for specific applications.
We do not offer a guarantee as many of our items are purchased by professionals in need of parts and pieces.
You will find many of our items listed on our website as untested or as parts or repair units even though in they are in good used condition.

**Shipping, Handling & Freight fees are dependent on your location.
We will provide a freight quote to meet your individual needs and work with you if you prefer to use your own carrier.
We have 32 years of experience shipping sensitive scientific instruments & industrial equipment!

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