You must keep your original engine instrument
Features quartz crystal and accuracy of 1 RPM. Resolution is 10 RPM and includes red line alarm. Specify engine and magneto models, number of cylinders, voltage and red line.
Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.
Yes, these are STC'd.
Per JPI, this is not approved as a primary instrument.
Per the manufacturer: 2.0 x .950 x 3.5 inches box (mounting ears 2-3/4 wide)