Purchased as one of multiple lots at a business liquidation auction, for sale is 1 Fowler Trimos Height-Micrometer Gage, Metric, 300mm measurement range with 2uM accuracy per division. Manufactured in Switzerland for Fowler's Trimos line of precision measurement tools. The current generation of the Trimos instrument line starts at over $5,000 from Fowler (with the highest end model of the Trimos line going for over $20,000!), but for this older generation unit you have a chance to pick one up for a fraction of the cost.
Five of these units were acquired, separate listings will be made for each one. You will receive this exact unit, as shown and as described.
Instrument knob rotation action is light and smooth. Adjustment is easily done with the force of one finger on the rotation knob.
Rotation adjustment ratio is 1 knob rotation per mm.
High stop point above positive 0 is 6.428mm as checked by slow and gentle adjustment.
Low stop point at table contact when upright is 4.516mm as checked by the same method (slow and gentle), low stop point when given room to allow further downward travel is 4.516mm (matching exactly) this most likely represents the results of prior calibration. I checked to verify that it was not actually stopping before table contact and verified using a light sourced at table height from behind the unit that this is indeed the exact height at which it contacts the table surface.
Use note for these mechanical height micrometers: do not use force to attempt to adjust past a mechanical stop point, you will likely need to re-calibrate if you do so. Excessive force may damage the instrument.
Hold screw works correctly on testing (tested by tightening between 6mm and 7mm at 00, 20, 40, 60 and 80 increment points on the uM-scale dial. Use note for the hold screw: the hold screw is meant to hold a measured value against unintentional brushing against the adjustment knob, not to hard-lock the knob. Do not attempt to forcefully adjust the knob when locked as you can weaken the hold screw contact surface.
Visible when looking at the underside of the gage base, this model has 3 sets of metal height graduations which (with face-plate disassembly) you can rotate between. This is a feature so that if there is wear or damage to one of the metal height-indexing faces the tool can still be used by rotating to the next set of outward-facing surfaces. Use note: doing this will require re-calibration.
The Fowler serial number for this unit is 6272.
Labels / Markings on this unit:
Unit top/front: sticker "Fowler Tools and Instruments Boston - Chicago - Los Angeles A Standard of Quality and Accuracy!"
Unit top/front: sticker "Do Not Use Until Tested & Calibrated"
Unit top/front: metal adhesive tag "Delco Electronics 111347"
Unit front/right/top manufacturer mark "Swiss Made Trimos"
Unit base/rear: sticker "Do Not Use Until Tested & Calibrated"
Unit base/rear: etched "2J-#11"
Unit base/underside: SN plate "6272" and "Swiss Made Trimos"
In spite of how solid and heavy these height-micrometers are (and this model is particularly heavy), they are precision instruments and need to be moved and packed with due care. You can rely on me to heavily and tightly pad and package these tools to make sure they arrive safe and sound.
Orders placed Sunday through Thursday will ship next day. Orders placed on Friday or Saturday may not ship until Monday. High value orders may ship with signature confirmation service.