3M Littmann Master Classic II User Manual

• Excellent acoustic sensitivity
• Patented tunable
diaphragm for monitoring
low and high frequencies
• Compact and portable design
• High-performance
single-lumen tubing
• Patented Littmann
®
Soft-sealing eartips
Master Classic II
Stethoscope
ins 38-9017-5105-7.dummy 3/18/02 12:18 PM Page 1

3M Littmann Master Classic II Specifications

General

Type	Stethoscope
Chestpiece	Single-sided
Chestpiece Technology	Tunable diaphragm
Diaphragm	Yes
Tunable diaphragm	Yes
Length	27 inches
Material	Stainless Steel
Tubing Material	PVC
Acoustic Performance	High
Headset Material	Aluminum
Color Options	Black, Burgundy, Navy Blue, Hunter Green
Diaphragm Size	1.75 inch / 4.4 cm

Summary

Instructions for Use

Changing Frequencies Using the Tunable Diaphragm

Explains how to switch between low and high frequency sounds using the tunable diaphragm without turning the chestpiece.

Headset Adjustment

Details on adjusting the eartubes for a comfortable, acoustically sealed ear fit and proper eartip insertion.

Assembly and Replacement of the Tunable Diaphragm

General Use and Maintenance

Provides guidelines for avoiding damage and cleaning the stethoscope, including eartip removal.

Littmann Stethoscope Service and Warranty Program

Explanation of Symbols

Defines symbols used in the manual, including attention notices and latex-free product indicators.