2-Pack, Starrett 230 Micrometer 0-1″ – Ratchet and Friction Style Used

2-Pack, Starrett No. 230 Micrometers – Ratchet Stop and Friction Lock  0-1″

Condition:

These micrometers are in good condition with a couple of light engravings from a previous owner. They have been well-maintained and are ready for precise measurement tasks.

Here’s what we know about it:

The main difference between the Starrett micrometers T230RL and T230FL lies in their thimble mechanism:

1. T230RL:
   – Features a ratchet stop mechanism
   – Includes a lock nut
   – Provides uniform pressure and quicker adjustment

2. T230FL:
   – Equipped with a friction thimble
   – Also includes a lock nut
   – Offers smooth friction for uniform pressure

Both micrometers share the following characteristics:
– 0-1″ (0-25mm) measurement range
– .0001″ graduation for high precision
– Spindle and anvil sized at .235″ (6mm) to reach places most micrometers cannot
– Quick-reading figures with every thousandth numbered on inch tools
– Designed for use by skilled workmen worldwide

The choice between the T230RL and T230FL depends on the user’s preference for either the ratchet stop mechanism (T230RL) or the friction thimble (T230FL) for controlling measurement pressure and adjustment speed.