CTRS (Certified Traceable Registration Sticker) - traceable to NIST (National Institute of Standards and Technology)

• 1/5 second recorder
• 30 min. register
• 60 second sweep
• Locked return
• 7 jewel
• Mineral glass
• Highly resistant to abrasion an acid
• Metal crown and side buttons
• Pinlever movement

• Special Order